Page 44 - Grammar for Great Writing B

Grammar Forms

3.1 Present Perfect

Subject Verb Example
I / you / we / they have + (not) Scientists have studied global warming for years.

+ past participle
World leaders have not done enough to stop global
warming.

he / she / it has + (not) The university has conducted an annual survey of
+ past participle transfer students since 1984.

The new leader has not been in power for very long.

Notes
1. For regular verbs, the past participle is the same as the simple past: verb + -ed. For example,
work–worked; arrive–arrived; study–studied.
2. See Appendix 4, Irregular Verbs, on page 220 for a list of irregular past participles.

ACTIVITY 1

Fill in the blank with the correct present perfect form of the verb in parentheses. Use not when it is
given.

1. This research paper will discuss why scholars (write) so
passionately about this issue.

2. According to historians, plastic surgery (exist) since 600 BCE.

3. For a variety of reasons, the field of cultural anthropology
(not, increase) in popularity.

4. The capital of Canada (be) Ottawa since 1867.

5. Surprisingly, doctors (not, find) a cure for the common cold yet.

6. Of the more than 300 Americans who (win) the Nobel Prize,
approximately 30 percent were born outside of the United States.

7. Latin (become) a “dead” language, at least in its spoken form.

8. Since 1918, women in the United Kingdom (have) the right to
vote.

34 Unit 3 Writing with the Present Perfect

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Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203
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