2) 不定式做宾语补足语
有些动词和短语可用不定式做宾语补足语,构成句型:主语+谓语动词+宾语+不定式。
这样的动词有:advice, allow, announce, ask, assist, authorize, bear, beg, bribe, cause, command, compel, condemn, deserve, direct, drive, enable, encourage, entitle, entreat, exhort, forbid, force, get, hate, help, implore, induce, inspire, instruct, intend, invite, lead, leave, like, mean, need, oblige, order, permit, persuade, pray, prefer, press, prompt, pronounce, recommend, remind, report, request, require, summon, teach, tell, tempt, urge, want, warn, wish。
这样的短语有:call on, care for, count on, depend on, keep on at, long for, make out, vote for, prevail on , rely on, wait for。
还有一些动词和词组用不定式做宾语补足语时不带to,但在被动形式时,其宾语补足语不定式必须带to。这样的动词和词组有:feel, have, hear, let, make, notice, observe, overhear, see, watch, listen to, look at。
例:1998年1月四级第44题
They are going to have the serviceman __________ an electric fan in the office tomorrow.
A) install B) to install C) to be installed D) installed
全句的意思是:他们准备让服务人员明天在办公室里装一台电扇。这里是have sb. do sth.的句型,是主动语态,因此,have 后接不带to的不定式做宾与补足语,所以答案是A) install。
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