题目内容
4.Mary was able to swim when she was seven years old.( )| A. | can | B. | would | C. | could |
分析 当Mary七岁的时候,她就会游泳了.
解答 答案:C.
can能,会;would将会;could,能,会,can的过去式形式,用在一般过去时当中;根据Mary was able to swim when she was seven years old,可知当Mary七岁的时候,她就会游泳了;was able to 能,会,是个过去式形式的短语,故选项C的意义与题干中划线部分的意义及时态相同;故选C.
点评 了解每个选项的含义是做好此类题型的关键,还要对题干中给出的词组作出分析和判断,平时的学习中要多进行积累词汇,才能很好的完成.
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