1.地点状语从句表示地点、方位,通常由where,wherever引导,可置于句首、句中或句尾。地点状语从句在句首时常兼有抽象条件意味。◆I cannot hear the professor clearly as there is too much noise where I am sitting. 因为我坐的地方噪音太大,所以听不清教授在说什么。 ◆Where there’s a will, there’s a way. 有志者,事竟成。 where引导的状语从句和定语从句的区别 where引导地点状语从句直接修饰主句的谓语动词,而在定语从句中where作为关系副词要跟在表示地点的先行词后面,即此时有明显的地点名词。 ◆When solving the problem a second time, you’d better be more careful where you made a mistake. =When solving the problem a second time, you’d better be more careful in the place where you made a mistake. 再次解决这个问题时,你最好在上次出错的地方更仔细一些。 2.条件状语从句常用引导词:if/unless/as long as/so long as/in case/so far as/as far as。(1)unless从句的谓语只能用肯定式;unless和if…not同义,unless是书面语,if…not是口语,二者通常可以换用。 ◆We will have a picnic in the park this Sunday unless it rains or it’s very cold. 除非下雨或天很冷,否则我们将在本周日去公园野餐。 ◆My parents don’t mind what job I do as long as I am happy. 我的父母不在意我从事什么工作,只要我高兴就好。 (2)条件状语从句的时态 在条件状语从句中,常用一般现在时表将来含义;现在完成时表即将完成之后的情况;一般过去时表过去将来的含义。 ◆If everyone does his part, the project will surely be a success. 如果大家都尽责,这个项目肯定会成功。 [典例] (重庆高考单项填空)Half an hour later, Lucy still couldn’t get a taxi ____________ the bus had dropped her. where 解析:句意:半小时后,露西仍然没有从下公交车的地方打到出租车。根据the bus had dropped her及句意可知,此处引导地点状语从句,故填where。 |
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