13.A computer can only do ________ you have instructed it to do.(  )
A.howB.afterC.whatD.when

分析 計(jì)算機(jī)只能做你指示它做的事情.

解答 C 考查賓語(yǔ)從句.分析提干信息可知you have instructed it to do是動(dòng)詞do的賓語(yǔ)從句,賓語(yǔ)從句中to do沒有賓語(yǔ),連接詞應(yīng)該用what引導(dǎo),what在從句中做do的賓語(yǔ),所以答案選C.

點(diǎn)評(píng) 賓語(yǔ)從句屬于名詞性從句中的一種,也是學(xué)生們需要掌握的一種基本的英語(yǔ)句型,引導(dǎo)名詞性從句的連接詞選擇是考試的重點(diǎn),學(xué)會(huì)分析從句的句子成分是解決名詞性從句的解題關(guān)鍵.

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