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1. You shouldn't go rafting unless you know how to swim, and you should always wear a life jacket. 除非你会游泳,而且要一直穿着救生衣,否则就不应该去做漂流运动。
该句中的unless引导状语从句。例如:One can't learn a foreign language well unless he studies hard.
unless引导的条件状语从句,一般可以与if...not...互换。还要注意unless引导的从句经常可以省略。
【考例】(200l北京春招)The men will have to wait all day ____ the doctor works faster.
A. if B. unless C. whether D. that
[考查目标]状语从句。
[答案与解析]B 句子意思是“如果医生不快点工作,
这些人将不得不等一整天。”应该选unless。
2. Eco-travel is a way to find out what can be done to help animals and plants as well as people. 生态游可以找到既帮助别人.又帮助动植物的途径。
该句中的as well as是连词,连接两个并列成分。例如: He can speak German as well as French.
yingyuzhoubaodaan.com小编为大家整理了 年高一必修一英语知识,希望对大家有所帮助。
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