though, although
　注意： 當(dāng)有though, although時(shí)，后面的從句不能有but，但是 though 和yet可連用
　although it's raining, they are still working in the field.　
　雖然在下雨，但他們?nèi)栽诘乩锔苫睢?br>　he is very old, but he still works very hard.　
　雖然他很老，但仍然努力地工作。
　though the sore be healed, yet a scar may remain.
　傷口雖愈合，但傷疤留下了。 （諺語(yǔ)）

典型例題
1） ___she is young, she knows quite a lot.　
a. when　b. however　 c. although　 d. unless
答案：c。意為雖然她很年輕，卻知道許多。

2)　as, though 引導(dǎo)的倒裝句
　 as / though引導(dǎo)的讓步從句必須表語(yǔ)或狀語(yǔ)提前（形容詞、副詞、分詞、實(shí)義動(dòng)詞提前）。
　　child as /though he was, he knew what was the right thing to do.
　= though he was a small child, he knew what was the right thing to do.

注意： a.　句首名詞不能帶任何冠詞。
　　　　b.　句首是實(shí)義動(dòng)詞，其他助動(dòng)詞放在主語(yǔ)后。如果實(shí)義動(dòng)詞有賓語(yǔ)和狀語(yǔ)，隨實(shí)義動(dòng)詞一起放在主語(yǔ)之前。
　　 try hard as he will, he never seems able to do the work satisfactorily.
　 = though he tries hard, he never seems…
　雖然他盡了努力，但他的工作總做的不盡人意。

3)　ever if, even though.　即使
　　we'll make a trip even though the weather is bad.

4) whether…or-　 不管……都
　　 whether you believe it or not, it is true.

5)　"no matter +疑問(wèn)詞" 或"疑問(wèn)詞+后綴ever"
　　 no matter what happened, he would not mind.
　　 whatever happened, he would not mind.
　 替換：no matter what = whatever
　　　　 no matter who = whoever
　　　　 no matter when = whenever
　　　　 no matter where = wherever
　　　　 no matter which = whichever
　　　　 no matter how = however
　 注意：no matter 不能引導(dǎo)主語(yǔ)從句和賓語(yǔ)從句。
�。ㄥe(cuò)）no matter what you say is of no use now.
�。▽�(duì)）whatever you say is of no use now.
　　　 你現(xiàn)在說(shuō)什么也沒(méi)用了。(whatever you say是主語(yǔ)從句)
�。ㄥe(cuò)）prisoners have to eat no matter what they're given,
�。▽�(duì)）prisoners have to eat whatever they're given.　囚犯?jìng)冎荒芙o什么吃什么。