题目内容
17.It's necessary us blind people cross the street.( )| A. | to; helping | B. | of; to help | C. | for; to help | D. | for; help |
分析 帮助盲人过马路对我们而言是有必要的.
解答 答案:C
考查句型:It is+adj.for sb to do sth.做某事对某人而言是…,与 It is+adj.of sb.to do sth.某人是…去做某事;前者形容词修饰事物,后者形容词修饰人;根据句子含义,帮助盲人过马路对我们而言是有必要的,做的这件事情是有必要的,修饰事物故用介词for,另外注意使用不定式to help,是句子真正的主语,所以选C.
点评 考生注意积累一些特殊的句式,在做题时根据句意选择正确的介词.
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