1、名词性从句的种类,主语从句宾语从句表语从句同位语从句,主语从句注意点,1).主语从句一律用陈述句语序,即主语在前,谓语在后.例:误: When will he come is not known.正: When he will come is not known.,主语从句注意点,2).连接词that在从句中无实际意义,但不能省略. 例:误: He will not come to the meeting this evening is true.正: That he will not come to the meeting this evening is true.,主语从句注意点,3).w
2、hether可以引导主语从句,但if不能。例:误: If the meeting will be held is still not know.正:Whether the meeting will be held is still not know.,主语从句注意点,4).为避免主语冗长,句子头重脚轻,经常用it作形式主语,主语从句放在后面作真正的主语.例: It is well known/reported/thought/said thatIt is clear/necessary/certain/true/doubtful thatIt doesnt matter whether/It
3、seems that It is a pity/a shame/an honor that,宾语从句注意点,1).宾语从句一律用陈述句语序.2).引导宾语从句的连词that也无实际意义,多数情况下可以省略.,宾语从句注意点,3).whether和if都可以引导宾语从句，但:(1)当whether后紧跟or not时,不用if. 例: I dont know whether I will stay or not.(2)介词后面的宾语从句不能用if. 例: I worry about whether I hurt her feeling.,表语从句注意点,1).表语从句一律用陈述句语序.2).表语
4、从句的引导词that无实际意义,但不能省略.3).表语从句只能用whether,而不能用if引导.,表语从句注意点,4).不要使用 The reason is because that 句型,应使用 The reason is that 或 This / it /that/ is because等句型.例：误: The reason why he was late is because that there was a lot of traffic on the road.,表语从句注意点,(1) The reason is that正: The reason why he was late
5、is that there was a lot of traffic on the road.(2) This / it /that/ is because或:He was late. That was because there was a lot of traffic on the road.,同位语从句注意点,同位语从句和定语从句的三点区别：从性质上区别 从词类上区别 从引导词及其在句子中的成分上区别,同位语从句注意点,1. 从性质上区别：定语从句是从句对其先行词的修饰或限制,属于形容词性从句的范畴;同位语从句是从句对前面抽象名词的进一步的说明和解释,属于名词性从句的范畴。,同位语从句注
6、意点,从性质上区别: The news that he told me yesterday was true. 2) The news that our team has won the game was true.,同位语从句注意点,2.从词类上区别：同位语从句的先行词只能是idea, fact, news, belief, suggestion等抽象名词。定语从句的先行词可以是名词、代词、主句的部分或是整个主句。,同位语从句注意点,2. 从词类上区别: 1） We are not looking into the question whether he is worth trusting.
7、 2）Our team has won the game, which made us very happy.,同位语从句注意点,3. 从引导词及其在句子中的成分上区别: 1) 有些引导词如how, whether, what可以引导同位语从句,但不能引导定语从句。(if 不能引导同位语从句)例：I have no idea whether he could succeed in getting into the college.,同位语从句注意点,3. 从引导词及其在句子中的成分上区别:2）that引导定语从句时,在从句中一般作主语或宾语(指物时还可以用which代替),并且作宾语时常常省略。that在同位语从句中仅起连接作用,不充当任何成分,并且不能省略,也不能用which来代替。,同位语从句注意点,例：1）The order that we should send a few people to help the other groups was received yesterday. 2）The order that we received yesterday was that we should send a few people to help the other groups.,嘿嘿，总算复习完了！,
