2) to + be 的不定式结构,作补语的动词。
acknowledge, believe, consider, think, declare(声称), discover, fancy(设想), feel, find, guess, judge, imagine, know, prove, see(理解), show, suppose, take(以为), understand
We consider Tom to be one of the best students in our class. 我们认为汤姆是班上最好的学生之一。
典型例题
Charles Babbage is generally considered ___ the first computer.
A. to invent B. inventing C. to have invented D. having invented
答案:A. 由consider to do sth. 排除B、D。. 此句只说明发明这一个事实,不定式后用原形即可。而C为现在完成时,发明为点动词一般不用完成时,且此处也不强调对现在的影响,因此不选C。
3) to be +形容词
seen, appear, be said, be supposed, be believed, be thought, be known, be reported, hope, wish, desire, want, plan, expect, mean
The book is believed to be uninteresting. 人们认为这本书没什么意思。 4) there be+不定式
believe, expect, intend, like, love, mean, prefer, want, wish, understand
We didn't expect there to be so many people there. 我们没料到会有那么多人在哪里。
注意
有些动词需用as 短语做补语,如regard, think believe, take, consider.
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