题目内容
3.They are trying to do somethingto help(help) the old.分析 他们努力去做一些事来帮助老年人.
解答 答案:to help.根据something,可知在这里它是一个不定代词,后面的成分来修饰它的话,可以用to引导的动词不定式来表示,在这里表示目的.故填to help.
点评 本题考查了动词不定式的用法.解答时熟知句意以及句子所缺的成分是解答本题的关键.
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