Question

——Did Jack come back early last night?
——Yes. It was not yet eight o’clock _______ he arrived home.

A．before

B．when

C．that

D．until

Answer 1

B

試題分析：句意：--杰克昨晚回來早嗎？---是的，當(dāng)他回來時 時間還不到八點。這里用when引導(dǎo)時間狀語從句，it指時間，注意這句話不是強調(diào)句型 如果是強調(diào)句型 時間前應(yīng)加介詞at（It was at 8 o’clock that he arrived）故C 錯。如果用before 必須是時間段 如 It was eight hours before  he arrived八小時后他到了。也不是not until 句型 該句型一般強調(diào)主語的動作 如 He didn't arrive until eight! 他直到八點才到！選B。