1、 _____ I accept that he is not perfect, I do actually like the person.　 (04江苏)

　　 A. While　　　　　 B. Since　　　　 C. Before　　 D. Unless

3、让步状语从句

问题1：

2、I always take something to read when I go to the doctor’s ________ I have to wait. (05全国卷3)

　　 A．in case　　　 　　　 B．so that　　　 C．in order D．as if

as long as 与 as far as 都可引导条件状语从句，as long as 表示“只要…”，as far as 表示“就…而论(而言)”。题1根据题意应该选用B。in case 表示“以防”，根据题2的句意，不难作出选择。

1、_____ I can see, there is only one possible way to keep away from the danger. (04北京春季)

　　 A. As long as　　 B. As far as　　 C. Just as　　 D. Even if

2、 It is known to all that _____ you exercise regularly, you won’t keep good health. (05重庆卷)

　　 A. unless　　　　　 B. whenever　　　　 C. although　　　　 D. if

unless 相当于 if not，意思是“除非…”“如果不…就…”。这也是高考的热点之一。复习时也应给予高度重视。

问题2：

1、The WTO cannot live up to its name ____ it does not include a country that is home to one fifth of mankind. (2000全国)

　A．as long as　　 B．while　C．if　　　 D．even though

　　　 如：It will be two years before he leaves the country.

　　 2)句型It will be/was not+一段时间+before…“不多久就……”

　　　 如： It wasn’t two years before he left the country.

　　 3)句型It is+段时间+since…时间的计算一律从since从句的 动作完成或状态结束时算起。如：

　　　 It is three years since she was in the army.

　　　 It is three years since she joined the army.

2、条件状语从句

问题1：

　　　 Before they reached the station, the train had gone.　

4．Before I could get in a word, he had measured me.

3． Please write it down before you forget it.