時間狀語從句
連詞主要有：when as while before after until as soon as since等
(1)區(qū)別when, as, while的用法
①.when"當......時候"引導的時間狀語從句，其動詞既可以是延續(xù)性動作的動詞，也可以是瞬間性動作的動詞,如：
_________ the students heard the teacher's footsteps, they all stopped talking.
當學生們聽到老師的腳步聲時，他們都停止了講話。(從句動作發(fā)生在前)
② as"當.......時候"或"一邊.......一邊"引導的時間狀語從句其動詞的動作是延續(xù)性的，而且側重表示主句和從句的動作并相發(fā)生：
We were having breakfast __________ she was combing her hair.
她梳頭時我們在吃早飯。
③ while表示"在某一段時間里"或"在……期間"，其所引導的從句的動作是延續(xù)性的，并側重表示和主句的動作同時發(fā)生。如：
I can learn ________ I work.
我可以邊工作邊學習。
用when, as, while填空：
________ you came in, I was talking with a few boys.
It started to rain __________ we were playing outdoors.
They talked _________ they walked down the river.
__________ it was raining, the students were playing basketball.
Her brother watched TV__________ he ate supper.
(4) before引導的時間狀語從句，指時間上的"在……之前"
I'll be back _______________________________________________.
你離開之前我就會回來。
(5) as soon as表示"一……就"，做題要注意主將從現(xiàn)
As soon as we __________ (get) there, he ___________ (tell) us the news.
我們一到那，他就會告訴我們那個消息。
(7) since引導的時間狀語從句，從句的謂語動詞通常為一般過去時，主句的謂語動詞通常為現(xiàn)在完成時
We __________ never __________ (meet) since we ___________ (graduate) from the college.
大學畢業(yè)后我們就再沒見過面。
(8) till/until引導的時間狀語從句 till和until同義，作"直到……時(為止)"解，till多用于非正式文體，until多用于句首;not … until通常與after進行轉換。如：
I won't go with you until(till) I finished my homework.
=____________________________________________________________________.
等我做完作業(yè)我才和你一起去。
連詞主要有：when as while before after until as soon as since等
(1)區(qū)別when, as, while的用法
①.when"當......時候"引導的時間狀語從句，其動詞既可以是延續(xù)性動作的動詞，也可以是瞬間性動作的動詞,如：
_________ the students heard the teacher's footsteps, they all stopped talking.
當學生們聽到老師的腳步聲時，他們都停止了講話。(從句動作發(fā)生在前)
② as"當.......時候"或"一邊.......一邊"引導的時間狀語從句其動詞的動作是延續(xù)性的，而且側重表示主句和從句的動作并相發(fā)生：
We were having breakfast __________ she was combing her hair.
她梳頭時我們在吃早飯。
③ while表示"在某一段時間里"或"在……期間"，其所引導的從句的動作是延續(xù)性的，并側重表示和主句的動作同時發(fā)生。如：
I can learn ________ I work.
我可以邊工作邊學習。
用when, as, while填空：
________ you came in, I was talking with a few boys.
It started to rain __________ we were playing outdoors.
They talked _________ they walked down the river.
__________ it was raining, the students were playing basketball.
Her brother watched TV__________ he ate supper.
(4) before引導的時間狀語從句，指時間上的"在……之前"
I'll be back _______________________________________________.
你離開之前我就會回來。
(5) as soon as表示"一……就"，做題要注意主將從現(xiàn)
As soon as we __________ (get) there, he ___________ (tell) us the news.
我們一到那，他就會告訴我們那個消息。
(7) since引導的時間狀語從句，從句的謂語動詞通常為一般過去時，主句的謂語動詞通常為現(xiàn)在完成時
We __________ never __________ (meet) since we ___________ (graduate) from the college.
大學畢業(yè)后我們就再沒見過面。
(8) till/until引導的時間狀語從句 till和until同義，作"直到……時(為止)"解，till多用于非正式文體，until多用于句首;not … until通常與after進行轉換。如：
I won't go with you until(till) I finished my homework.
=____________________________________________________________________.
等我做完作業(yè)我才和你一起去。