初中英语必考的三大从句，掌握好得高分思维导图

宾语从句的连接词包括that、if/whether(是否)、特殊疑问词。

A 宾语从句的连接词后一般加陈述语序（主语在前，谓语在后），如：I want to know if he can come tomorrow.

B 当连接词本身又是宾语从句的主语时，后面直接加谓语动词，如：She asked me who had helped him.

（3）宾语从句的时态

连接词：when(当……时候) while(当……时候) as(当……时候) after(在……以后) before(在……以前) as soon as(一……就) since(自从……到现在) till /until(直到……才) by the time(到……为止)依旧是连接词后大多数加陈述语序。

举例：when当……的时候(一般情况下主句是将来时的时候，从句要用一般现在时。)

Mozart started writing music when he was four years old.

连接词：由连词because, since，as引导， 也可由for，now that 等词引导。

举例：I didn’t go to school yesterday because I was ill.

连接词：if如果， unless (=if not) 除非。(让步)

举例：If it doesn’t rain tomorrow, we will go hiking.

目的状语从句是指在一个句子中充当目的状语的句子。

结果状语从句是指在一个句子中充当结果状语的句子。

目的状语从句连接词：so that, so…that , in order that 引导。

结果状语从句连接词：so…that, such…that, so much/many…that引导。

举例：so…that 如此…以至于

The scientist’s report was so instructive that we were all very excited.

让步状语从句是指在句子中作让步的状语的句子。

连接词：though, although.，whether…or not

举例：Although he is rich, yet he is not happy.

连接代词：who、which、whom、whose、that

连接副词：when、where、why