高中英語連詞知識點整理
7.引導原因狀語從句的從屬連詞有 because, as, since等。
because“因為”語氣最強,回答why提問時只能用because
as“由于”since“既然”語氣不如because強，引導的從句常置于句首
for是并列連詞，語氣最弱，對前面分句加以解釋或補充說明，其引導的分句常置于句末且用逗號隔開。
例如：he didn’t go to school because he was ill.
as it was raining, we went there by bus.
since everybody is here, let’s begin.
it must have rained last night, for the ground is wet.
注意： because與 so不能同時使用。
8.引導讓步狀語從句的從屬連詞有：although/though(雖然，盡管), even though/if (即使)
例如：although/ though it is a very young country, it is very rich.
注意：although/though 引導的從句不能與but連用，但可與yet, still連用。
9.引導目的狀語從句的從屬連詞有so that和in order that(以便，為了)等。
例如：the teacher spoke loudly so that /in order that we could hear him clearly.
10.引導結果狀語從句的從屬連詞有：so that(結果是)和so/such…that…(如此…以至于)等。
例如：it was very cold, so that the water in the bowl froze.
he got there so early that he got a good seat.
11.引導比較狀語從句的從屬連詞有： as…as…(與……一樣),not as/so… as…(不及，趕不上),和than(比)等。
例如：i know you better than she does.
he works as carefully as she.
12.引導名詞性從句的從屬連詞有：that和 if/whether(是否)等。
例如：we know that the earth goes around the sun.(賓語從句)
i wonder if he has received my e-mail. (賓語從句)
注意：在時間狀語從句和條件狀語從句中，如果主句是將來時，從句要用一般現在時。
例如：i’ll go on with the work when i come back tomorrow.