英语句子概述　 英语语法课件教材课程.ppt

2).连接代词: who, whom, whose, what, which, whoever,whatever, whichever 例: (1).It is clear who is afraid of having a change in land ownership. (2).Whose bag it is can not be told. (3).What India needs is a law to make land ownership fairer. (4).It is not yet decided which cash crop will be produced next year. (5).Whatever he said was right. (6).Whoever go there must get ready by 6 o’clock. 3).连接副词: when, where, why, how, how many, how much how long, how soon, how often 例:(1).When we’ll start tomorrow will be told soon. (2).Where we can buy oxen is something we need to find out. (3).Why he came here is not known. (4).How we can protect the grain from damp needs to be discussed. (5).How many people died from starvation that year will never be known. (6).How often he’ll go to see his grandmother depends on the time he can spare. 2.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: 正: When he will come is not known. 误: When will he come is not known. 2).连接词that在从句中无实际意义,但不能省略. 例: 正: That he will not come to the meeting this evening is true. 误: He will not come to the meeting this evening is true. 3).whether可以引导主语从句,但if不能. 4).whoever, whatever, whichever等词可以引导主语从句, 但no matter who, no matter what 等不能. 5).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/… that… It is clear/necessary/certain/true/doubtful/… that… It is a pity/a shame/an honour/… that… It doesn’t matter whether…/It seems that… It happens that… 三.宾语从句 1.宾语从句的引导词: 宾语从句的连接词与引导主语从句的连接词相同. 2.注意点 1).宾语从句一律用陈述句的语序. 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. 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 don’t know whether I will stay or not. (2).介词后面的宾语从句不能用if.