Thought 是 think 的过去式，意思是：想、思考。 through 的意思是：通过；穿过。 though 的意思是：虽然；尽管。 可以跟although一起记，同个意思。 tough 的意思是：艰苦. 2.a thorough solution to the problem. They made a thorough mess of trying to organize a party.
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Last year's cotton crop was an unmitigated disaster.
如下： though副词，“尽管，虽然”，记住不能与but连用eg.though it is raining now, i will go there.
