---How did you work out the difficult chemistry problem?
--- I worked it out by ________.
A.working with a groupB.think very hard
C.a(chǎn)sk the teacher for helpD.doing oneself
A

試題分析:句意:你是如何解決這個(gè)化學(xué)難題的?下文by是介詞,表示通過(guò)某種方式,后面接名詞或者動(dòng)名詞作賓語(yǔ),選項(xiàng)A表示通過(guò)小組合作,選項(xiàng)D語(yǔ)義不符,結(jié)合語(yǔ)境可知選A。
點(diǎn)評(píng):英語(yǔ)中原形動(dòng)詞一般只能用作句子的謂語(yǔ),不能用作介詞或者動(dòng)詞的賓語(yǔ)等句子成分。解答此題還需要了解各個(gè)短語(yǔ)的基本含義及用法的不同,同時(shí)注意其表示多個(gè)含義的現(xiàn)象,然后結(jié)合語(yǔ)境選擇合適答案。
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