Question

觀察下列句子，試著歸納其畫線部分所包含的句型結(jié)構(gòu)。

1．While walking the dog, you were careless and it got loose and was hit by a car．(P1, 4)

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2．You will tell him/her that he/she should have studied, so you don’t let him/her look at your paper．(P1, 5)

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3．…but your friend can’t go until he/she finishes cleaning the bicycle．(P1, Warming Up 1)

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Answer 1

答案：
解析：

1．while引導(dǎo)的狀語從句中的主語如果和主句的主語一致，從句可以省略主語和部分謂語。 　　2．should have done表示“過去本應(yīng)該做某事，而實(shí)際上沒做”。 　　3．(not…)until/till