题目内容
13.--What do Li Lei's parents do?--They _________ doctors.( )| A. | are all | B. | are both | C. | all are | D. | both are |
分析 --李磊的父母做什么的?
--他们都是医生.
解答 答案:B.考查不定代词.句意"--李磊的父母做什么的?--他们都是医生.".all全部,表示三个以上.both两者都.结合语境 Li Lei's parents,用both,A,C不正确.both应该放在be动词后,实义动词前.因此D不正确.答案是B.
点评 考查不定代词.这里要分清both,all的区别,还要掌握不定代词的位置.结合语境完成试题.
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