although与though可以引导让步状语从句,不能与but连用,但可以与yet连用.

　　Although they are poor,they are warm-hearted.

　　even if或even though引导让步状语从句,表示即使,纵然,用来使人注意下文所强调内容的性质.

　　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等疑问词,也可以在这类疑问词后面加上ever构成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也可以引导让步状语从句.要用倒装.

　　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.