状语从句练习

A. saw B. watched C. noticed D. observed ［答案］ B

［解析］ 题干中的主句为肯定句， until需要跟主句里肯定形式的表延续性动作的谓语动词连用， 因此本题应选表示延续性动作的watched(其他选项中的saw， noticed， observed所表示的动作都不能延续， 意味着结果)。

［考题16］ —Was his father very strict with him when he was at school?

—Yes. He had never praised him ____ he became one of the top students in his grade. (2003北京春)

A、 after B.unless C.until D.when ［答案］ C

［解析］ until跟主句里否定形式的、 表非延续性动作的谓语动词连用时， 表示“直到??才(开始)”， 本题应选until与主句中的“never praised”对应， 表示“他的父亲直到他成为年级里的尖子生之一时才开始称赞他”。

［考题18］ — What was the party like?

— Wonderful. It’s years ____ I enjoyed myself so much. (1993)

A. after B. before C. when D. since ［答案］ D

［解析］ since表示“自从??以来”。

［考题19］ They ____ friends since they met in Shanghai. (1989) A. have made B. have become C. have been D. have turned ［答案］ C

［解析］ 题干中的since表示“自从??以来”， 主句中的谓语动词应该表示从他们在上海相遇至今的持续性的动作， 因此下划线处应填入可以表示持续性状态的have been(其他选项中的made、 become、 turned所表示的动作都不能延续， 意味着结果)。

［考题1］ Small sailboats can easily turn over in the water ____ they are not managed carefully. (2007上海)

though B. before C. until D. if ［答案］ D

［解析］ 根据全句意思， “they are not managed carefully”应表示一种假设， 因此下划线处应选用if引导条件状语从句。

［考题2］ In time of serious accidents, ____ we know some basic things about first aid, we can save lives. (2006重庆)

whether B. until C. if D. unless ［答案］ C

［解析］ 本题应选意为“如果”的if表示假设。

［考题3］ I would appreciate it ____ you call back this afternoon for the doctor’s appointment. (2003上海春)

until B. if C. when D. that ［答案］ B

［解析］ 本题应选意为“如果”的if表示假设。

［考题4］ It is known to all that ____ you exercise regularly, you won’t keep good health. (2005重庆)A。unless B. whenever C. although D. if ［答案］ A

［解析］ 本题应选意为“如果不， 除非”的unless表示假设。

［考题5］ Most birds find it safe to sleep in the trees, but ____ they have eggs or young chicks, they don’t use a nest. (2007湖南) A． why B. how C. unless D. where ［答案］ C

［解析］ 综合整句的意思， 下划线处应表示“除非??”含义的假设。 典型例题：

1） ___she is young, she knows quite a lot. A. When B. However C. Although D. Unless 答案：C。意为虽然她很年轻，却知道许多。

［考题1］ We had to wait half an hour ____ we had already booked a table. (2007辽宁) A. since B. although C. until D. before ［答案］ B

［解析］ 下划线处之后所述的“我们已经预订了一桌”与前面所述的“我们已经不得不等了半个小时”之间语意相反， 四个选项中although表示“即便??”， 引导让步状语从句最为合适。

［考题2］ ____ most of the earth’s surface is covered by water, fresh water is very rare and precious. (2006上海春)

A as B. Once C. If D. Although ［答案］ D

［解析］ 句意为： 虽然地球表面覆盖着水， 但是纯净水仍然很稀有、 珍贵。下划线处应引导让步状语从句， 填入although最为合适。

［考题3］ ____ he has limited technical knowledge, the old worker has a lot of experience. (2006) A. Since B. Unless C. As D. Although ［答案］ D

［解析］ 下划线处应引导让步状语从句， 填入although最为合适。 ［考题4］ Although he is considered a great writer, ____. (1991)

A. his works are not widely read B. but his works are not widely read

C. however his works are not widely read D. still his works are not widely read［答案］ A ［解析］ 英语不允许在连词although、 though引导的让步状语从句之后的主句句首重复使用连词， 如果要在复合句中强调某种特别的意义， 可以在主句的句首加上yet、 still等副词。例如： Although she has a lot of money, (yet/still) she is not happy. 虽然她很有钱， 但是她并不快乐。

本题题干中没有通过特定的语境暗示需要对主句进行特别强调， 因此只需用although引导让步状语从句即可， 不必在主句的句首加副词(更不能在主句的句首加连词)。注意： 本题中的works指“作品、 著作”， 例如表达“莎士比亚的作品”可以用“the works of Shakespeare”。

［考题5］ There was never any time for Kate to feel lonely, ____ she was an only child. (2005辽宁)

A. ever since B. now that C. even though D. even as ［答案］ C

［解析］ 下划线处应引导让步状语从句， 四个选项中只有even though可以引导让步状语从句。 ［考题6］ Many of them turned a deaf ear to his advice, ____ they knew it to be valuable. (2007浙江)

A. as if B. now that C. even though D. so that ［答案］ C

［解析］ “Many of them turned a deaf ear to his advice”和“they knew it to be valuable”意思相反， 四个选项中引导让步状语从句的even thoug最为适合。

［考题7］ Allow children the space to voice their opinions, ____ they are different from your own. (2005湖南)

A. until B. even if C. unless D.as though ［答案］ B

［解析］ 题干句意为： 让孩子们有发言的空间， 即使他们的观点与你的不同。从句与主句为让步关系， 应由even if 引导从句。