【題目】I was doing my homework ________ someone knocked at the door.

A.whileB.asC.atD.when

【答案】D

【解析】

句意:我正在做作業(yè), 這時(shí)候有人敲門。

考查從屬連詞。while當(dāng)……時(shí)候;as隨著;at是介詞,意為“在……”;when當(dāng)……時(shí)候。be doing...when...意為“正在……這時(shí)候.……”,在此句型中表示“正要做某事,恰好when 后面的那件事情發(fā)生”,when意為“這時(shí)候”,強(qiáng)調(diào)后邊的動(dòng)作突然發(fā)生。故選D。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】Do you often _________ your friends’ house without calling first?

A. sell out B. walk down C. drop by D. look after

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】__________ (explore) of the solar system began in the 19th century.

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】He __________ (fall) off the tree just now. He __________ (fall) off the tree twice.

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】—Do you like the ________ in Hainan?

No.It's too hot.

A.foodB.peopleC.houseD.weather

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】---Have you ever been to Tibet?

--Yes. I ________there for half a month last summer holiday.

A. have been B. went C. was

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】Up to now, Harbin International Ice and Snow Festival has a history of over_______.

A. 26 years’ B. 26-year C. 26 years

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】If he learns the traffic safety, he ________ down at the sharp turn.

A.slowsB.slowed

C.will slowD.is slowing

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:

【題目】I was in trouble and Jim o________to help me. It was nice of him to do so.

查看答案和解析>>

同步練習(xí)冊(cè)答案