Today I review the knowledge about verb. There are six parts in this unit. I focus on the passive verb, verb in conditional sentences and verbs followed by gerunds or infinitive.
Passive verb
Passive voice expresses the subject's action to bear.
The letter was typed by me.(Passive verb,subject is 'The letter',is the 'typed' action to bear)
Verb in conditional sentences
Conditional sentences contain two clauses.
- A subordinate clause
I’ll help him if he asks me.
Factual conditional sentences
We use the present tense in both clauses, if the conditional sentence' s relationship is a scientific truth.
If he comes, he will bring his violin.
Sentences of Unreal Condition.
- Predictive conditional sentences
In subordinate clause, use a present-tense verb；in dependent clause, use the modal plus the base form of the verb.
I'll not forgive you unless you correct your mistake.(IND)
- Speculative conditional sentences
Use the past and past perfect tense in the if clause, even for conditions in the present or in the future.
If I had the money．I would travel round the world.
Verbs followed by gerunds or infinitive
Gerund: A gerund is a feature of both nouns and verbs non-finite verbs. It can control the object, but also can be modified by adverbs. A gerund is tense and voice changes.
A verb form ends in -ing
sleeping dreaming skiing beginning swimming
Infinitive: The infinitive is a non-finite verb. "Infinitive" Verb + infinitive.Infinitive can make any sentences elements in a sentence except predicate.
the words + the base form of the verb
to go to help to do to sleep
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