考点五、表示比较的从属连词what/as

例10. Engines are to machines ______ hearts are to animals. (2006年高考山东卷)

A. as

B. that

C. what

D. which

例11._____ I explained on the phone, your request will be considered at the next meeting.(2005年高考浙江卷)

A. WhenB. After

C. As

D. Since

例12.What a table! I’ve never seen such a thing before. It is ________ it is long.(2005年高考湖北卷)

A. half not as wide as

B. wide not as half as

C. not half as wide as

D. as wide as not half

[解析]C､C､C｡what用作从属连词,表比较,用于A is to B what C is to D结构中;而as表示原级比较,常用于as...as结构中,程度修饰语应置于第一个as之前,嵌入的形容词或副词使用原级｡另外as还表“正如､按照”,引导方式连词｡

考点六、表示条件的从属连词if /unless/as long as/once

例13. ________ I know the money is safe, I shall not worry about it.

A. Even thoughB. UnlessC. As long asD. While

例14.Small sailboats can easily turn over in the water ____ they are not managed carefully.(2007年高考上海卷)

A. though

B. before

C. until

D. if

例15.You will be successful in the interview ____ you have confidence. (2007年高考福建卷)

A. before

B. once

C. until

D. though

例16.I won’t call you, _____ something unexpected happens.(2007年考全国卷)

A. unlessB. whether C. becauseD. while

[解析]C､D､B､A｡表条件的连词if/unless/as long as/unless在用法上存在一些差异｡as long as用法同only if/on condition that,强调某事的发生以另一事件的发生为前提;if为正面条件,可能会产生好的或坏的结果,若某种条件产生坏的结果,此时的if可用as long as替换; unless为反面条件,表示除非,如果不,故在真实条件句中常和if…not换用;once既表时间,又包含条件,译作一旦｡

考点七、表示让步的从属连词although/when/while

例17. We had to wait half an hour _______ we had already booked a table. (2007年高考辽宁卷)

A. sinceB. although

C. until

D. before

例18.______I really don’t like art, I find his work impressive. (2007年高考山东卷)

A. As

B. Since

C. If

D. While

【解析】B､D｡although/when/while均可表示让步,后两者的用法较为特殊｡although/though引导让步连词时不与but和yet连用;而while却表示“部分接受,但并非全部”,或用于“强调两种情况､活动等之间的差距”;when也可表示虽然,尽管,同even if,常置于句末｡

考生们只要加油努力，就一定会有一片蓝天在等着大家。以上就是威廉希尔app 的编辑为大家准备的历届高考英语常考知识点：数词

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