The student said there were a few points in the essay he _____ impossible to understand.
A.had foundB.findsC.has foundD.would find
A

試題分析:句意,學(xué)生說(shuō)他發(fā)現(xiàn)這篇文章里有幾點(diǎn)很難理解。通過(guò)分析句子結(jié)構(gòu),可知這個(gè)句子中包含一個(gè)賓語(yǔ)從句。主句用的是一般過(guò)去時(shí),從句要用相應(yīng)的過(guò)去時(shí)態(tài),所以這里用過(guò)去完成時(shí)。
點(diǎn)評(píng):賓語(yǔ)從句的時(shí)態(tài)問(wèn)題  1)當(dāng)主句的謂語(yǔ)動(dòng)詞是一般現(xiàn)在時(shí)時(shí),其賓語(yǔ)從句的時(shí)態(tài)可以是任何適當(dāng)?shù)臅r(shí)態(tài)。所以,賓語(yǔ)從句的時(shí)態(tài)應(yīng)根據(jù)實(shí)際情況而定。2)當(dāng)主句的謂語(yǔ)動(dòng)詞的時(shí)態(tài)是一般過(guò)去時(shí)的時(shí)候,其賓語(yǔ)從句的時(shí)態(tài)一般要用任一適當(dāng)?shù)倪^(guò)去時(shí)態(tài)。
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