题目内容
10.My sister has learnt English .( )| A. | for twelve years ago | B. | since she was four | ||
| C. | twelve years ago | D. | at the age of four |
分析 我姐姐自从四岁的时候就开始学英语.
解答 答案B for+段时间可以和现在完成时连用;段时间+ago要和一般过去时连用,since引导的时间状语从句常和现在完成时连用.at+点时间常和一般现在时连用.根据"has learnt English"可知后面需要用for或者since引导的时间状语,但是A项还有ago,就错了.故选B.
点评 现在完成时和什么时间状语连用是有要求的,要结合具体的题意做出正确选择.
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