题目内容
4.It's impolite _____ others.( )| A. | laughs at | B. | to laugh at | C. | laugh at | D. | laughing at |
分析 嘲笑别人是不礼貌的.
解答 答案:B.
根据It's impolite _____ others,可知这里使用的句型是It's+adj.+to do sth..意思是做某事是…的.由此可知,这里it作形式主语,to引导的动词不定式作真正的主语.故选B.
点评 本题考查了动词不定式的用法.解答时注意It's+adj.+to do sth..意思是做某事是…的.
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