题目内容
5.We usually start classes ____ten o'clock every morning.( )| A. | on | B. | in | C. | at | D. | by |
分析 我们通常每天上午十点开始上课.
解答 答案:C.
根据设空处后面的时间"ten o'clock every morning"可知句子中的时间状语是"每天上午十点",是考查具体时刻前面的介词,用介词at. at+时间点; in+年、月、季节等;on+具体的某一天或某一天的上午/下午/晚上;by+时间点表示"到…为止",故选C.
点评 本题考查时间介词的用法.熟记时间介词的用法,掌握每一个时间介词后跟的时间类型及每个时态常用时间状语,是做题的关键.
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