高中英語詞法專題狀語從句精品教案

英語詞法專題講座十六：狀語從句
一、引導詞的選擇：
1. 時間狀語從句
1). 由when、while、as（當……時候）引導的時間狀語從句。
when jack got home, his mother was cooking.
2). 由after/ before (在….之后/ 前)引導的時間狀語從句。
the football match played after school was over.
3). 由as soon as (一…..就……)引導的時間狀語從句。
i’ll ring you as soon as i reach beijing.
4). 由not….until（直到…..才…..）引導的時間狀語從句。
they didn’t stop until they finished the work.
2. 原因狀語從句
 由because、since、as（因為、既然、由于）引導的原因狀語從句。
since you have known about that, please tell us what to do.
3. 地點狀語從句
 由wherever（無論在哪兒）引導的地點狀語從句。
wherever he goes, he always brings his pet dog.
4. 目的狀語從句
 由so that (以便、為的是)引導目的狀語從句。
he got up very early so that he could catch the early bus.
5. 條件狀語從句
 由if或unless 引導條件狀語從句。
i won’t go to his party unless i am invited.
6. 比較狀語從句
 由than、 as…as、not as……as 引導比較狀語從句。
there are more students in our class than in theirs.
7. 讓步狀語從句
 由though、even though/ if、although引導讓步狀語從句。
although he didn’t pass the exam, his father didn’t get angry with him.
8. 方式狀語從句
 由as if (好像)引導方式狀語從句。
he talked about that as if he knew everything.
9. 結果狀語從句
 由so…that…、such….that…（如此…..以致于…）引導結果狀語從句。
it was raining so hard that we couldn’t see the road.
二、狀語從句與主句的時態(tài)問題
1. 時間狀語從句、條件狀語從句與主句的時態(tài)不一致。（主句用將來時，而時間、條件狀語從句用一般現(xiàn)在時）
if it ________(not rain) tomorrow, we______(go) to climb the hill.
he ________ (become) a sodier when he ______(grow) up.
2. since引導的時間狀語從句。 it is + 時間+ since + 一般過去時 
it_____(be) ten years since we ________(leave) that city.
3. 由when、while引導的時間狀語從句的時態(tài)：
 主句（過去進行時）+when +從句（一般過去時）
 主句（一般過去時）+when +從句（過去進行時）
 主句（一般過去時）+while +從句（過去進行時）
 主句（過去進行時）+while +從句（過去進行時）
注意：看動詞為短暫性動詞用一般過去時，動詞為延續(xù)性動詞則用過去進行時。
mother _______(cook)supper when i ______(get)home yesterday.
last sunday i_______(meet)lin hong when i _______(walk)in the street.
while han meimei _______(sweep)the floor, lucy _______(carry) water.
when the students ________(have)a meeting, the teacher _______(come) in.
4. 由when、after、before、by the time引導的時間狀語從句的時態(tài)：
主、從句的謂語動作都以完成，則先發(fā)生的動作用過去完成時，后發(fā)生的動作用一般過去時。
when they _______(get) to the cinema last light, the film ________(start).
i _________(go) out with my friends after i _______(finish) all the homework last night.