2010年中考英语语法专题讲座：状语从句

　　一、引导词的选择：

　　1.时间状语从句

　　1).由when 、 while、as(当……时候)引导的时间状语从句。

　　When jack got home , his mother was cooking .

　　2).由after/ before (在….之后/ 前)引导的时间状语从句。

　　The football match played after school was over .

　　3).由as soon as (一…..就……)引导的时间状语从句。

　　I‘ll ring you as soon as I reach Beijing .

　　4).由not….until(直到…..才…..)引导的时间状语从句。

　　They didn‘t stop until they finished the work .

　　2.原因状语从句

　　由because 、since 、as(因为、既然、由于)引导的原因状语从句。

　　Since you have known about that , please tell us what to do .

　　3.地点状语从句

　　由wherever(无论在哪儿) 引导的地点状语从句。

　　Wherever he goes , he always brings his pet dog .

　　4.目的状语从句

　　由so that (以便、为的是)引导目的状语从句。

　　He got up very early so that he could catch the early bus .

　　5.条件状语从句

　　由if或unless 引导条件状语从句。

　　I won‘t go to his party unless I am invited .

　　6.比较状语从句

　　由than、 as…as、not as……as 引导比较状语从句。

　　There are more students in our class than in theirs .

　　7.让步状语从句

　　由though 、even though/ if 、although引导让步状语从句。

　　Although he didn‘t pass the exam ,his father didn‘t get angry with him .

　　8.方式状语从句

　　由as if (好像)引导方式状语从句。

　　He talked about that as if he knew everything .

　　9.结果状语从句

　　由so…that…、such….that…(如此…..以致于…)引导结果状语从句。

　　It was raining so hard that we couldn‘t see the road .

　　二、状语从句与主句的时态问题

　　1.时间状语从句、条件状语从句与主句的时态不一致。(主句用将来时，而时间、条件状语从句用一般现在时)

　　If it ________(not rain) tomorrow ,we______(go) to climb the hill .

　　He ________ (become) a sodier when he ______(grow) up .

　　2.since引导的时间状语从句。 It is + 时间+ since + 一般过去时

　　It_____(be) ten years since we ________(leave) that city .

　　3.由when、while引导的时间状语从句的时态：

　　主句(过去进行时)+when +从句(一般过去时)

　　主句(一般过去时)+when +从句(过去进行时)

　　主句(一般过去时)+while +从句(过去进行时)

　　主句(过去进行时)+while +从句(过去进行时)

　　注意：看动词为短暂性动词用一般过去时，动词为延续性动词则用过去进行时。

　　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引导的时间状语从句的时态：

　　主、从句的谓语动作都以完成，则先发生的动作用过去完成时，后发生的动作用一般过去时。

　　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 .