定语从句as和which的区别讲义

1 名词性从句区别 名词性从句是一种具有名词功能的非独立分句，可以表示：事实和问题。 1.连接词有： that whether 和 lf 2.连接代词有：who whom whose which what 等 3.连接副词有：when where why how 等 另外 whatever whoever whichever 等 也可 以引导主语和宾语两种从句 名词性从句中的“that”没有词义，也不作任何成分。除引导宾从外，主从和表从中不省 1. 主语从句：从句在句中充当主语成分 1) That the earth is round is true . 2) Whether he will come is doubtful . 3) What he said surprised me most . 4) Where he hid the money is to be found out . 5) Whoever comes is welcome. 6) It’s certain that he will succeed 7) How we can help the twins will be discussed at the meeting. 8) When they’ll start the project has not been decided yet It 的用法： （形式主语） It’ possible/important/necessary/clear… that… … 很可能/重要的是… /必要的是… /很清楚… It’ said/ reported… that… 据说/据报道… It’s been announced/declared that… 已经通知/宣布… It seems/appears/happens.. that… 显然、明显、 碰巧… It’s no wonder that… 并不奇怪/无疑… It’s a pity/a fact /a common knowledge (众所周知） / a common saying… .（俗话说 “if” 不能引导主语从句，应有“whether”引导 主语从句的 “that” 一般不能省。 “what”引导主语从句时，谓语动词： 1 ）常与其后作表语的名词一致 2 ）根据句子的语境而定。 1. What you left are only several old books. 2. What you said is of great importance. 3. What he says and does doesn’t concern me. 4. What he says and does don’t agree 2. 宾语从句：从句在句中充当宾语成分（ 可以作谓语动词、介词、不定式等非谓语动词的宾语） that, whether，if （ that 常可省略） 连词：who, what, which, whoever, whatever when , where , why ,how 1). Can you make sure where Alice has put the gold ring. 2). It all depends on whether they will support us . 3). She will give...