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1、Unit 4 Global warming1. even if【用法】even if意为“即使,纵然,虽然”,引导让步状语从句。如:Even if you take a taxi, youll still miss your train.Ill get there, even if I have to walk.【考例1】 He is so busy. He cannot afford enough time with his son _ he wants to. (四川2013)A. even if B. as ifC. because D. before【点拨】选A。由He is so b
2、usy可知,他不能腾出足够的时间陪儿子,虽然(even if)他很想。 【考例2】Look at those clouds!Dont worry. _ it rains, well still have a great time. (北京2012)A. Even if B. As though C. In case D. If only【点拨】选A。由“别担心这些”可知,答语第二句句意为“即使(Even if)下雨,我们仍然会玩得很开心。”as though意为“好像”,引导方式状语从句;in case意为“以防,万一”,引导条件状语从句;if only意为“要是就好了”,主要用在虚拟语气中。
3、2. on behalf of【用法】on behalf of意为“代表”。如:On behalf of the department I would like to thank you all.【考例】 _ everyone here, I wish you a pleasant journey back to your country. (辽宁2013)A. By means of B. On behalf ofC. In search of D. For fear of【点拨】选B。由后面的祝福可知,这是代表(on behalf of)大家的。by means of用,依靠;in sea
4、rch of寻找;for fear of唯恐,以免。3. so long as【用法】so long as意为“只要”,相当于as long as,引导条件状语从句。So / As long as you keep on trying, you will surely succeed.【考例】Ones life has value _ one brings value to the life of others. (江苏2012)A. so that B. no matter how C. as long as D. except that【点拨】选C。一个人的生命有价值的条件是“他给别人的生活带来价值”,故用as long as引导条件状语从句。so that意为“以致于,结果”,引导目的或结果状语从句;no matter how意为“不管怎样”,引导让步状语从句;except that意为“要不是,只不过”。2