Vocabulary 4000 - Noel's ESL eBook Library
Vocabulary 4000 - Noel's ESL eBook Library
Vocabulary 4000 - Noel's ESL eBook Library
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Idiom & Usage 141<br />
14. A verb has four principal parts:<br />
I. Present Tense<br />
a. Used to express present tense.<br />
b. Used to express general truths.<br />
c. Used with will or shall to express future time.<br />
II.<br />
III.<br />
IV.<br />
Past Tense<br />
a. Used to express past tense.<br />
Past Participle<br />
a. Used to form the present perfect tense, which indicates<br />
that an action was started in the past and its<br />
effects are continuing in the present. It is formed<br />
using have or has and the past participle of the verb.<br />
b. Used to form the past perfect tense, which indicates<br />
that an action was completed before another past<br />
action. It is formed using had and the past participle<br />
of the verb.<br />
c. Used to form the future perfect tense, which indicates<br />
that an action will be completed before another future<br />
action. It is formed using will have or shall have and<br />
the past participle of the verb.<br />
Present Participle (-ing form of the verb)<br />
a. Used to form the present progressive tense, which<br />
indicates that an action is ongoing. It is formed using<br />
is, am, or are and the present participle of the verb.<br />
b. Used to form the past progressive tense, which indicates<br />
that an action was in progress in the past. It is<br />
formed using was or were and the present participle<br />
of the verb.<br />
c. Used to form the future progressive tense, which<br />
indicates that an action will be in progress in the<br />
future. It is formed using will be or shall be and the<br />
present participle of the verb.<br />
15. Unless you want to de-emphasize the doer of an action, you<br />
should favor the active voice.
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