to go to be to dream to admire To indicate tenses of regular verbs when the action of the verb did occur, is occurring, or will occur, we use the base form of the verb and add the approp
Trang 1Ve r b s
Verbs are the “heart” of a sentence They express the
action or state of being of the subject, telling us what the
subject is doing, thinking, or feeling
She yelled out the window (action)
I am happy to be here (state of being)
We feel very lucky to be alive (state of being)
I should ask Winston what he thinks (action)
Verbs have five basic forms:
1 Infinitive: This is base form of the verb plus the
word to.
to go to be to dream to admire
To indicate tenses of regular verbs (when the
action of the verb did occur, is occurring, or will
occur), we use the base form of the verb and add
the appropriate tense endings
2 Present tense: This verb form expresses what is
happening now
I am sorry you are not coming with us.
Jessica does yoga every morning.
The present tense of regular verbs is formed as
follows:
first person base form base form
second person base form base form
third person base form + base form
(he/she/it/they) –s/–es (believes) (believe)
3 Present participle: This verb form describes
what is happening now It ends in –ing and is
accompanied by a helping verb such as is.
Jessica is doing a difficult yoga pose.
Note: Words that end in –ing don’t always
function as verbs Sometimes, they act as nouns
and are called gerunds They can also function as adjectives (called participial phrases).
Present participle (verb): He is loading the boxes into the car.
Gerund (noun): This parking area is for loading only.
Participial phrase (adjective): The loading dock is littered with
paper.
(You will learn more about gerunds later in this section.)
4 Past tense: This verb form expresses what
hap-pened in the past
It snowed yesterday in the mountains.
I felt better after I stretched and did some deep breathing.
5 Past participle: This verb form describes an
action that happened in the past It is used with a
helping verb, such as has, have, or had.
It has not snowed all winter.
I have waited as long as I can.
Regular Verbs
Most English verbs are “regular”—they follow a standard set of rules for forming the present participle, past tense, and past participle
■ The present participle is formed by adding –ing.
■ The past tense and past participle are formed by
adding –ed.
■ If the verb ends with the letter e, just add d.
■ If the verb ends with the letter y, for the past tense, change the y to an i and add –ed.
Some examples appear on the next page
Trang 2A handful of English verbs have the same present,
past, and past participle form Here is a partial list of
those verbs and several examples:
SAME PRESENT, PAST, AND
PAST PARTICIPLE FORM
Present: I read the newspaper every
morning.
Past: I read the newspaper yesterday
morning.
Past participle: I have read the newspaper every
morning since 1992.
Irregular Verbs
About 150 English verbs are irregular: They don’t follow
the standard rules for changing tense We can divide
these irregular verbs into three categories:
1 irregular verbs with the same past and past
par-ticiple forms
2 irregular verbs with three distinct forms
3 irregular verbs with the same present and past
participle forms
The following table lists examples of irregular verbs
PAST
Same past and past participle forms:
Three distinct forms:
spring sprang sprung
Same present and past participle forms:
overcome overcame overcome
Trang 3In English, as in many other languages, the essential verb to be is highly irregular:
Helping verbs (also called auxiliary verbs) are essential to
clear communication They help indicate exactly when
an action took place or will take place They also suggest
very specific meanings, such as the subject’s ability or intention to do something The following table lists the helping verbs, their forms, and their meanings
PRESENT
will, shall would intention She will meet us at the hotel.
They said they would call first.
can could ability I can be there in ten minutes.
Rose could find only one glove.
may, might, can, could could, might permission May I tag along?
Could we get together after the meeting?
should should + have + recommendation We should leave before the snow starts.
past participle They should have known better.
must, have (to) had (to) necessity I must go to the dentist.
I had to have two teeth pulled.
should should + have + expectation They should be on the next train.
past participle They should have been on that train.
may, might might + have + possibility They may be lost.
past participle They might have gotten lost.
Helping Verbs
Trang 4Subjunctive Mood
The subjunctive mood is one of the verb forms we often
forget to use in conversation, and therefore, we often
neglect to use it correctly in our writing Like helping
verbs, the subjunctive is used to express a specific
mean-ing, indicating something that is wished for or that is
contrary to fact It is formed by using were instead of was,
as in the following examples:
If she were a little more experienced, she would
get the promotion (She is not a little more
experienced.)
If I were rich, I would travel the world
(Unfortu-nately, I am not rich.)
Troublesome Verbs
Three verb pairs are particularly troublesome, even for
native English speakers:
lie/lay
sit/set
rise/raise
The key to knowing which verb to use is
remember-ing which verb takes an object In each pair, one verb is
transitive—an object “receives” the action—while the
other is intransitive—the subject itself “receives” or
per-forms the action For example, lie is an action that the
subject of the sentence “performs” on itself: I will lie
down The transitive verb lay, on the other hand, is an
action that the subject of the sentence performs upon an
object: I lay the baby down in the crib In the following
examples, the subjects are in bold, and the objects are underlined
lie: to rest or recline (intransitive—subject only)
lay: to put or place (transitive—needs an object)
I will lie down for a while.
Will you please lay the papers down on the
table?
sit: to rest (intransitive—subject only)
set: to put or place (transitive—needs an object)
Why don’t we sit down and talk this over?
He will set the record straight.
rise: to go up (intransitive—subject only)
raise: to move something up (transitive—needs
an object)
The sun will rise at 5:48 A M tomorrow.
He raised the rent to $750 per month.
The basic forms of these verbs can also be a bit tricky The following table shows how each verb is conjugated
Trang 5Now that you have reviewed verb conjugation and
tense formation, it’s time to talk about two key issues
with verb usage: consistent tense and subject–verb
agreement
Consistent Tense
One of the quickest ways to confuse readers, especially if
you are telling a story or describing an event, is to shift
verb tenses To help readers understand when actions
occur, make sure verbs are consistent in tense If you
begin telling the story the present tense, for example,
keep the action in the present tense; do not inadvertently
mix tenses as you write Be clear about changing tense,
and make sure that it makes sense in the context of the
story (For example, a story that takes place in the
pres-ent tense might use the past tense to talk about actions
that happened before the story started.) Otherwise, you
will leave your readers wondering whether actions are
taking place in the present or took place in the past
Incorrect: She left the house and forgets her keys
again.
Correct: She left the house and forgot her keys
again.
Incorrect: When we work together, we got better
results.
Correct: When we work together, we get better
results OR When we worked together, we got better results.
Agreement
In English grammar, agreement means that sentence
ele-ments are balanced Verbs, for example, should agree
with their subjects: If the subject is singular, the verb
should be singular; if the subject is plural, the verb
should be plural
Incorrect: They doesn’t have a chance against
Coolidge.
(plural subject, singular verb) Correct: They don’t have a chance against
Coolidge.
(plural subject, plural verb)
Of course, to make sure subjects and verbs agree, you need to be clear about who or what is the subject of the sentence For example, what is the subject in the follow-ing sentence, and which is the correct verb?
Only one of the students [was/were] officially reg-istered for the class.
In this sentence, the subject is one, not students Though it seems like students are performing the action
of being completed, students can’t be the subject because
it is part of a prepositional phrase (of the students), and
subjects are never found in prepositional phrases.
Thus, the verb must be singular (was, not were) to agree
with one It is only one of the students—not all—who
was registered, so again, the verb must be singular Here are some other important guidelines for subject– verb agreement:
■ If a compound, singular subject is connected by
and, the verb must be plural.
Both Vanessa and Xui want to join the committee.
■ If a compound, singular subject is connected by
or or nor, the verb must be singular.
Neither Vanessa nor Xiu wants to join the committee.
■ If one plural and one singular subject are
con-nected by or or nor, the verb agrees with the
clos-est subject
Neither Vanessa nor the treasurers want to join the committee.
Neither the treasurers nor Vanessa wants to join the committee.
■ In an inverted sentence, the subject comes after the
verb, so the first step is to clearly identify the
sub-ject (Sentences that begin with there is and there
are, for example, and questions are inverted
sen-tences.) Once you correctly identify the subject, then you can make sure your verb agrees The correct subjects and verbs are underlined below
Incorrect: There’s plenty of reasons to go.
Trang 6Incorrect: What is the side effects of this
medication?
Correct: What are the side effects of this
medication?
Gerunds and Infinitives
Gerunds and infinitives have given many students of
Eng-lish a grammar headache, but they are not so difficult to
master Gerunds, as we noted earlier, look like verbs
because they end in –ing, but they actually function as
nouns in sentences:
Tracy loves camping.
Here, the “action” Tracy performs is loves The thing
(noun) she enjoys is camping In the following sentence,
however, camping is the action Tracy performs, so it is
functioning as a verb, not as a gerund:
Tracy is camping in the Pine Barrens next week.
Words ending in –ing can also function as adjectives:
Some of our camping gear needs to be replaced
before our trip.
Here’s another example of how the same word can
have three different functions:
Verb: He is screaming loudly.
Gerund (noun): That screaming is driving me
crazy!
Adjective: The screaming boy finally stopped.
What this means is that you can’t count on word
end-ings to determine a word’s part of speech Lots of words
that look like verbs may not be It’s how they function in
the sentence that counts
Infinitives are the base (unconjugated) form of the
verb preceded by to: to be, to delay, to manage They are
often part of a verb chain, but they are not the main verb
(main action) of a sentence:
Priya likes to write poems.
In this example, likes is the main verb; what Priya likes
In many situations, you may be uncertain whther to use
an infinitive or a gerund Which is correct: I like to swim
or I like swimming? In this case, both are correct; like,
hate, and other verbs that express preference can be
fol-lowed by either a gerund or infinitive But other verbs can only be followed by one or the other Here are a few helpful guidelines:
■ Always use a gerund after a preposition.
Keza thought that by taking the train, she would save money and time.
Noriel was afraid of offending her host, but she couldn’t eat the dinner.
■ Always use a gerund after the following verbs:
appreciate enjoy put off
can’t help finish recall
consider imagine resist
discuss postpone tolerate
We should discuss buying a new computer.
I am going to quit smoking.
■ In general, use an infinitive after these verbs:
agree decide need refuse
ask expect offer venture
bother hope pretend wish
claim manage promise
Aswad promises to be back by noon.