名词性从句一轮复习同步导学案 【学习目标】：掌握名词性从句引导词的用法，并能判断出主语从句这一类型的从句。名词性从句定义：在句子中起_________作用的句子叫名词性从句。名词性从句分四类：____________ _____________ ______________ _____________【名词性从句的引导词】1.从属连词：that, whether/if, as if/as though, because, 其中 that, whether/if, 在从句中不担任成分，只起到引导从句的功能。that 没有实际意义 。if (whether), 意思为 “是否”。I don’t care about __________ you have money or not.The problem is __________ Tom is able to arrive on time.__________ the meeting will be held here is not decided yet. It looks __________ it is going to rain.The truth is __________he didn’t come for the concert.__________ the earth is round is true.易混点 whether 与 if 区别 二者都可以作“是否”讲，能引导名词性从句，都不能省略。1. ）在及物动词后引导宾语从句时可以互换；注意：在某些动词后（如:discuss）只能接 whether，不能跟 if。如：We discussed whether we should close the shop.2. ）引导主语从句、表语从句、同位语从句时都用 whether，不用 if。如：The question whether he should come himself or send another man hasn’t been decided.Whether he will win is all the same to me.The question is whether you can go there yourself.如果用形式主语，if 和 whether 都可以It is unknown whether\if she is ill.3. ）如果 whether 后紧跟 or not，不用换做 if；若 whether 与 or not 分开使用，则可以换作if。如：I wonder whether or not he has arrived at the destination.I don’t know whether\if I can come or not.4.）若宾语从句为否定结构，则多用 if，而不用 whether。如：I don’t care if he doesn’t show up.（在乎，炫耀）5.）在介词后引导宾语从句或与带 to 的动词不定式结合而构成不定式的复合结构时，只能用whether，而不用 if。如：I haven’t settled the question of whether I will go back home.She doesn’t know whether to get married now or wait.2、...
