though,although
注意：当有though,although时，后面的从句不能有but，但是though和yet可连用
Althoughit'sraining,theyarestillworkinginthefield.
虽然在下雨，但他们仍在地里干活。
Heisveryold,buthestillworksveryhard.
虽然他很老，但仍然努力地工作。
Thoughthesorebehealed,yetascarmayremain.
伤口虽愈合，但伤疤留下了。（谚语）典型例题
1）___sheisyoung,sheknowsquitealot.
A.When B.However C.Although D.Unless
答案：C。意为虽然她很年轻，却知道许多。2) as,though引导的倒装句
as/though引导的让步从句必须表语或状语提前（形容词、副词、分词、实义动词提前）。
Childas/thoughhewas,heknewwhatwastherightthingtodo.
=Thoughhewasasmallchild,heknewwhatwastherightthingtodo.注意：a. 句首名词不能带任何冠词。
b. 句首是实义动词，其他助动词放在主语后。如果实义动词有宾语和状语，随实义动词一起放在主语之前。
Tryhardashewill,heneverseemsabletodotheworksatisfactorily.
=Thoughhetr ieshard,heneverseems…
虽然他尽了努力，但他的工作总做的不尽人意。3) everif,eventhough. 即使
We'llmakeatr ipeventhoughtheweatherisbad.4)whether…or- 不管……都
Whetheryoubelieveitornot,itistr ue.5) "nomatter+疑问词"或"疑问词+后缀ever"
Nomatterwhathappened,hewouldnotmind.
Whateverhappened,hewouldnotmind.
替换：nomatterwhat=whatever
nomatterwho=whoever
nomatterwhen=whenever
nomatterwhere=wherever
nomatterwhich=whichever
nomatterhow=however
注意：nomatter不能引导主语从句和宾语从句。
（错）Nomatterwhatyousayisofnousenow.
（对）Whateveryousayisofnousenow.
你现在说什么也没用了。(Whateveryousay是主语从句)
（错）Prisonershavetoeatnomatterwhatthey'regiven,
（对）Prisonershavetoeatwhateverthey'regiven. 囚犯们只能给什么吃什么。
