牛津實用英語語法:340 讓步從句
它們由下列詞來引導：although，though，even though，even if，no matter，however。有時也可以使用whatever。as也可以，但是只限于形容詞+as+be結構。
Although/Though/Even though/Even if you dont like him you can still be polite.
盡管/即使/縱然/即使你不喜歡他，你仍可有禮貌一些。
No matter what you do，dont touch this switch.
無論怎樣，都別碰這個按鈕。
However rich people are，they always seem anxious to make more mon- ey.
無論人們多么富有，他們似乎總還渴望賺到更多的錢。
However carefully you drive，you will probably have an accident eventual- ly.
無論你開車多小心，最后你大概還會出車禍。
Whatever you do，dont tell him that I told you this.
無論如何，別跟他說這件事是我告訴你的。
Patient as he was，he had no intention of waiting for three hours.
哪怕他再有耐心，也不打算等上三個小時。
may+動詞原形可用于假設情況：
However frightened you may be yourself，you must remain outwardly calm.
無論你有多害怕，外表上你仍要保持冷靜。
may含有I accept the fact that(我接受這一事實)的意思：
But hes your brother!
He may be my brother but I dont trust him!
可他是你的兄弟!
盡管他是我的兄弟，可我不信任他!
但may這樣用時，是另一主句的一部分，并不屬于讓步從句之列。should+動詞原形結構可用于even if之后，正如用于條件句的if之后一樣，用來表示should后面的動詞原形所指的動作不太可能發生：
Even if he should find out he wont do anything about it.
即便他發現了，他也不會采取什么行動的。
它們由下列詞來引導：although，though，even though，even if，no matter，however。有時也可以使用whatever。as也可以，但是只限于形容詞+as+be結構。
Although/Though/Even though/Even if you dont like him you can still be polite.
盡管/即使/縱然/即使你不喜歡他，你仍可有禮貌一些。
No matter what you do，dont touch this switch.
無論怎樣，都別碰這個按鈕。
However rich people are，they always seem anxious to make more mon- ey.
無論人們多么富有，他們似乎總還渴望賺到更多的錢。
However carefully you drive，you will probably have an accident eventual- ly.
無論你開車多小心，最后你大概還會出車禍。
Whatever you do，dont tell him that I told you this.
無論如何，別跟他說這件事是我告訴你的。
Patient as he was，he had no intention of waiting for three hours.
哪怕他再有耐心，也不打算等上三個小時。
may+動詞原形可用于假設情況：
However frightened you may be yourself，you must remain outwardly calm.
無論你有多害怕，外表上你仍要保持冷靜。
may含有I accept the fact that(我接受這一事實)的意思：
But hes your brother!
He may be my brother but I dont trust him!
可他是你的兄弟!
盡管他是我的兄弟，可我不信任他!
但may這樣用時，是另一主句的一部分，并不屬于讓步從句之列。should+動詞原形結構可用于even if之后，正如用于條件句的if之后一樣，用來表示should后面的動詞原形所指的動作不太可能發生：
Even if he should find out he wont do anything about it.
即便他發現了，他也不會采取什么行動的。
