条件与让步状语从句
外研版选择性必修第二册 Unit 6 重点语法。
一、条件状语从句
- 引导词:
if, unless (= if not), as long as, provided that, on condition that。 - 时态规则:主将从现(主句为将来时,从句用一般现在时表示将来)。
二、让步状语从句:-ever 与 no matter
| 引导词 | 引导状语从句 | 引导名词性从句 | 示例 |
|---|---|---|---|
| no matter + wh- | √ | × | No matter where you go, keep in touch. |
| wh-ever | √ | √ | Whoever arrives first will get the prize. (主从) |
三、although / though 与 as 的倒装让步
as 引导让步状语从句时,必须采用倒装结构(将表语、状语或动词原形提前):
- Rich as he is, he lives a simple life.(虽然他富有)
- Hard as they tried, they couldn't solve the problem.(尽管他们很努力)