可能有同学觉得奇怪,既然托福考试考了词汇,为什么却没有专门考察语法的题目呢?实际上作为英语基础,语法在托福考试中同样受到重视,只不过考察方式被巧妙融入了各个题型当中。比如阅读部分的多种语法现象都在文章里面,语法不通看文章自然会受到影响。下面小编就来为大家讲解托福阅读中的不定式用法。
1. 动词不定式的否定式
not to
She decided not to be late again.
2. 动词不定式的完成式
完成式表示的动作或状态发生在位于动词表示的动作或状态之前。
I am sorry to have kept you waiting.
3. 在It is/was + 形容词+不定式的复合结构
若形容词侧重于评价人物的特性、特征,则构成不定式复合结构的介词应为of。
常用形容词有:kind, nice, foolish, silly, stupid, rude, cruel, wise, clever, brace, selfish, crazy, good, careful, careless, impolite, right, wrong等。
It is very kind of you to help me.
区别It is important for us to learn English well.
4. 在某些动词后, 可用it做形式宾语,然后加宾语补足语,最后加不定式作真正的宾语。
常见的动词有find, think consider, feel, make等。
They find it difficult to repay the money.
5. 动词+不定式作宾补
ask, want, invite, get, force, expect, allow, persuade, order, warn, remind order, cause, permit, forbid, advise, teach等。
6. 在使役动词make, have, let和感官动词see, watch, notice, observe, feel, hear, listen to, look at等词后接不定式作宾补,不定式不带to,表示做某事的全过程。当他们转换成被动语态时,作为主语补足语的不定式必须带to(五看三使两听一感觉一发现)
Nobody saw him come in.
She was seen to enter the room last night.
注意:get 也能当使役动词,表示“使、让、叫”之意,相当于have,但两者也有所不同。
have sb. do sth.get sb to do sth.使/让/叫某人去做某事
have sth. done = get sth. done 使/让某事由别人去做
have sb./sth. doing 使/让某人/物持续地做某事
get sb./ sth.dong 使某人/物开始行动起来
You’d better have/get your hair cut.
He managed to get the horse running.
以上就是小编为大家解读的托福阅读语法现象中的不定式用法,希望能给大家提供一些参考帮助。