【正文】
king, the teacher came in. 當(dāng)我們正在交談時,老師進(jìn)來了。 What was your mother doing when you came back? 當(dāng)你回來時,你媽媽在做什么? 單元語法聚焦五 (2)while可以連接兩個進(jìn)行時態(tài)的句子,而 when 不可以。如: I was trying my best to finish my work while my sister was watching TV. 我妹妹在看電視時,我正盡全力完成工作。 (3)when 是特殊疑問詞,可以對時間進(jìn)行提問,但 while 不可以對時間提問。如: When were you born?你是什么時候出生的? 單元語法聚焦五 ( ) 臨沂 They ______ about a edy this time yesterday. A. were talking B. are talking C. have talked D. will talk ( )成都 Yesterday, I ______ the subway home when I suddenly found I was on the wrong line. A. took B.