although與though可以引導(dǎo)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(dǎo)讓步狀語從句,表示即使,縱然,用來使人注意下文所強(qiáng)調(diào)內(nèi)容的性質(zhì).

　　Ill get there even ifI have to sell my house to get enough money to go by air.

　　no matter后接上who、what、where、how等疑問詞,也可以在這類疑問詞后面加上ever構(gòu)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.

　　as也可以引導(dǎo)讓步狀語從句.要用倒裝.

　　Child ashe is, he knows a lot.

　　Much as I like it, I wont buy.

　　Try as he would, he couldnt lift the heavy box.