Question

【題目】用方框中所給詞的適當(dāng)形式填空。

clean，build，plant，hand

【1】By the end of last year, another bridge _________ here.

【2】Your paper must _________ in as soon as the bell rings.

【3】We are glad to find that many trees ________ last years.

【4】Your bedroom should ________ every day.

Answer 1

【答案】

【1】had been built

【2】be handed

【3】were planted

【4】be cleaned

【解析】

【1】根據(jù)By the end of last year“截止到去年年底”，判斷句子時(shí)態(tài)為過(guò)去完成時(shí)，且bridge與build之間為被動(dòng)關(guān)系，所以為had been built。

【2】hand in sth意為“交上……”，其被動(dòng)式為sth be handed in，所以paper與hand in之間為被動(dòng)關(guān)系，且在情態(tài)動(dòng)詞must之后，所以使用系動(dòng)詞原形be。

【3】由trees判斷使用動(dòng)詞plant，且兩者為被動(dòng)關(guān)系，且根據(jù)last years判斷使用過(guò)去時(shí)；由句子主語(yǔ)many trees確定系動(dòng)詞為were。

【4】由bedroom確定動(dòng)詞為clean，且為被動(dòng)式；在情態(tài)動(dòng)詞should之后應(yīng)使用系動(dòng)詞原形be。