条件让步状语从句.pptVIP

定义： 条件状语从句是表示主句动作发生的前提 或条件的从句。 引导条件状语从句的连词有： if, unless, as long as, on condition that (只 要，条件是)，supposing/ suppose (that)/ providing/provided (that) (如果，假如)， in case, once(一旦)等。 注意： if引导的条件状语从句 但表示意愿的句子可以用will. eg: If it rains tomorrow, we’ll not go to the concert. eg: If you will wait, I’ll tell the manager that you are here. 主将从现 (2)unless相当于if not, 意为“如果… 不”；除非； eg: We’ll go mountain climbing unless there is rain. = We’ll go mountain climbing if there is no rain. (3) so/as long as , on condition that “只要， 条件是” eg: As/So long as we don’t lose heart, we will find a way to overcome the difficulty. eg: I can lend you my car on condition that you return it to me this afternoon. (4) supposing/suppose/providing/provided/ given (that) 如果 eg: Supposing (that) it rains, shall we continue the sports meeting? eg: Providing/provided that you have one million dollars, what will you do ? (5) in case “以防；万一” ，其后接句子。 in case of 后接名词。 eg: Please carry an umbrella in case it rains. = Please carry an umbrella in case of rain. 定义： 让步状语从句表示在某种相反的条件下， 主句中的情况依然会出现。 常用的引导词有： although, though, as, however, whatever, whoever, whomever, whichever, whenever, wherever, no matter (who, what, when, etc.), even if , even though, whether…or(not), while(尽管)等。 (1)though与although 引导让步状语从句不 能和but 连用，但可与still, yet, nevertheless 等adv.连用。 (改错) eg: Although I asked them to be quiet, but they didn’t seem to care. still as, though 引导的让步状语从句， 从句中 的表语、状语（副词）或动词等可以提 前，作表语的单数可数名词冠词需省略。 （请标出倒装的部分） eg: Young as he is , he knows a lot. eg: Hard as he works, he makes little progress. eg: Child as he is, he knows much English. eg: Object as you may, I will go.(反对) Young Hard Child Object (2) even though即使，可与even if 互换。 eg: Even though/if you say so, I don’t believe it . (3) whether…or(not) “不论是否…” eg: Whether you believe it or not, it is true. eg: Whether the weather is good or bad, they will set off as planned. (4) while 也经常位于句首， 相当于 although, “尽管”。 eg: While I understand