题目内容
20.Environmental concerns that worry many never seem _____ any effect on William,who is always optimistic about the future.( )A. | having | B. | to have | C. | to have had | D. | had |
分析 句意:令很多人担忧的环境问题好像从来对William没有影响,他总是对未来很乐观.
解答 答案:B 用排除法解答本题.因为seem to do sth.为固定搭配,所以排除A、D两项.因为本题是一般现在时态,所以此处应该用不定式的一般式,而不能用不定式的完成时.又排除C项.故选B.
点评 考查不定式作表语.主要区分不定式的一般式和完成式的用法.此题是seem的固定用法.
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