北师大版高中英语必修1Unit1_Lesson3_长难句型精析

Unit1 Lesson3 长难句型精析 1. as…as… 跟……一样…… as…as…是同级比较结构，意为“和……一样……”，第一个as后接形容词或副词原级，第二个as后接比较对象。 （1）as…as…结构可用于肯定句和否定句，在否定句中还可用so代替第一个as。 He doesn't play the piano as/so well as his sister. 他弹钢琴不如他姐姐弹得好。 （2）as…as…结构前如有表示倍数的词修饰，可构成倍数表达法的一种句型。 This river is twice as long as that one. 这条河是那条河的两倍长。 教材原文 It can get as cold as minus 40or 50 degrees at night. 夜里会冷到零下40-50℃。 经典例句 ①The exam is as easy as last one. 这次考试和上次一样容易。 ②Tom works as hard as Mary. 汤姆和玛丽学习一样努力。 ③He has as big a house as mine. =He has a house as big as mine. 他有一个和我的房子一样大的房子。 ④He made as many mistakes as I did. 他犯的错误和我犯的一样多。 ⑤Then, later that afternoon, another big quake which was almost as strong as the first one shook Tangshan. 接着，那天下午晚些时候，强度几乎和第一次地震一样的又一次地震在唐山爆发了。（本句是主从复合句，含有which引导的定语从句；句中的as strong as是同级比较结构） 即时训练1 I. 完成句子 1. ——和那件连衣裙相比，我更喜欢这件。 ——我也是，但它几乎贵一倍。 -I like this dress better than that one. -So do I, but it costs almost twice 2. 他没有收集到写书所需要的那么多信息。 He didn't collect he needed for his book. 3