2023年初中条件状语从句 要点

条件状语从句

要点： 表示状语从句由连词if, unless (=if not) 引导。

1.if it doesn’t rain tomorrow, we will go hiking.

如果明天不下雨, 我们就去远足.

2.you will get good grades if you study hard.

如果你努力学习,就会取得好成绩.

3.i will go to the party unless he goes there too.

我不会去参加聚会的, 除非他也去.(如果他不去,我也不去.)

4.you will be late unless you leave immediately.

如果你不马上走,你将会迟到的.(=if you don’t leave immediately, you will be late.)

难点提示：用条件状语从句时要注意时态的正确使用,当主句是将来时的时候,从句要用一般现在时.

lhe will not leave if it isn’t fine tomorrow.

一般将来时， 一般现在时

lthey are going to have a picnic if it doesn’t rain next week.

一般将来时, 一般现在时 考点　三、原因状语从句

要点: 由连词because, since, as引导, 也可由for, now that 等词引导

1.i didn’t go to school yesterday because i was ill.

我昨天没去上学，因为我生病了。

2. since everybody is here, let’s begin our meeting.

既然大家都来了, 让我们开始开会吧.

3. as you are in poor health, you should not stay up late.

既然你身体不好, 你就不该熬夜.

4.i asked her to stay to tea, for i had something to tell her.

我请她留下来喝茶,因为我有事要告诉她.

.难点——because , since , as , for,辨析

在语气上，because 最重, 表示的是直接理由,回答why 时只能用它. 其次是since, as ,一般不表示原因, 而是表明理由, 进一步说明.(译为：由于，既然). for 被认为是复合句的并列连词(常用于推断),表示理由.

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