1、注意狀語從句中從句的.省略現象
連接詞 + 過去分詞
Dont speak until spoken to.
Pressure can be incrased when needed.
Unless repaired, the washing machine is no use.
連詞 + 現在分詞
Look out while crossing the street.
連詞 + 形容詞/其他
常見的有it necessary、if possible、when necessary、if any等
2、讓步狀語從句
although與though可以引導讓步狀語從句,不能與but連用,但可以與yet連用.
Although they are poor,they are warm-hearted.
even if或even though引導讓步狀語從句,表示即使,縱然,用來使人注意下文所強調內容的性質.
Ill get there even ifI have to sell my house to get enough money to go by air.
no matter後接上who、what、where、how等疑問詞,也可以在這類疑問詞後面加上ever構成whoever、whatever、wherever、however等.
Dont trust him, no matter what / whatever he says.
Whoever breaks the law will be published.
No matter how hard the work is, youd better try to do it well.