不定式何时主动表被动

1、不定式何时主动表被动7 不定式何时主动表被动13The global warming is more and more serious,for which human beings _.are blaming B. are to blame C. are going to blame D. are to be blamed答案答案:B be to blame (for sth)用主动形式表示被动含义，表示“应负责，应受责备”。句意:全球变暖越来越严重，在这个问题上人类应该承担责任。7 不定式何时主动表被动1在“主语+be+形容词+不定式构造中,有时主语是不定式结构的逻辑宾语，要用不定式的主动形

2、式表示被动含义。如：The problem is difficult to solve.这个问题很难解决。English is not easy to learn.英语不容易学。2不定式作定语，与被修饰词之间为动宾关系，而与句中的另一名词或代词之间有主谓关系时，用主动形式。但如果没有这种主谓关系，那么需要用不定式的被动形式。如：I cant go with you. I have a meeting to attend.主谓关系动宾关系7 不定式何时主动表被动34在“疑问词+不定式构造中。如：She will tell you which bus to take.在“tooto构造中。如：Th

3、e box is too heavy for the boy to carry.5to let, to blame等常用主动形式表示被动含义。如：The house is to let.这间房子要出租。Who is to blame for it? 这得由谁承担责任？不定式作定语时，如果不定式中的动词与句子的主语构成动宾关系，且不定式中的动词是一个不及物动词，那么其后必须加上适当的介词。The chair is comfortable to sit on.这把椅子坐起来很舒服。He is easy to get on with.他是一个容易相处的人。The river is dangerous

4、 to swim in.在这条河里游泳很危险。牢记【典例一】Those air conditioners are our best-selling productsbecause they are _ and work with little noise.A. handling B. to be handlingC. handled D. to handle7 不定式何时主动表被动解析答案:D 句意：这些空调是我们的畅销产品，因为它们操作简便，运转起来几乎没有噪音。在句型“主语+be+adj+to do”中，如果主语是动词do的逻辑宾语，用主动表被动。故选D项。【典例二】Im going to

5、 Shanghai. Do you have anything _to your daughter there?A. to take B. taken C. to be taken D. taking7 不定式何时主动表被动解析答案:C 此处表示动作尚未发生，故用不定式。根据句意可知，主语you不是不定式动作take的发出者，且take与被修饰词anything之间为动宾关系，所以不定式用被动式，故答案为C。Every graduate in the college had an applicationform in his hand, but no one knew which office _.to send to B. to send it C. to be sent it D. to have it sent137 不定式何时主动表被动解析答案:A 根据句子结构可知，“which office_”在句中作宾语，在这一