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you were her friend. 主語從句 賓語從句 表語從句 同位語從句 名 詞性從句的種類 1. 主語從句:從句在句中充當(dāng)主語成分 1). That he will succeed is certain . 2) Whether he will go there is not known . 3) What he said is not true . 4) Where he hid the money is to be found out . 5) Whoever es is wele. 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: (形式主語) It’ possible/important/necessary/clear… that… …很可能 /重要的是 …/ 必要的是 …/ 很清楚 … It’ said/ reported… that.. 據(jù)說 /據(jù)報(bào)道 … It’s been announced/declared that..已經(jīng)通知 /宣布 … It seems/appears/happens.. that… 顯然、明顯、 碰巧 .. It’s no wonder that… 并不奇怪 /無疑 … It’s a pity/a fact /a mon knowledge (眾所周知) / a mon saying…. ( 俗話說) 1).whether可以引導(dǎo)主語從句 ,但 if不能 . 2).為避免主語冗長(zhǎng) ,句子頭重腳輕 ,經(jīng)常用 it作形式主語 ,主語從句放在后面作真正的主語 . 例 : 注意點(diǎn) if 或 whether 填空 ? 1. I don’t know _______ I’ll be free tomorrow. ? 2. I don’t know _______ or not I’ll be free tomorrow. ? 3. The question is ______ this book is worth writing. whether/if whether whether ? 4. It depends on ______ we will have enough money. ? 5. ______ they can do it matters little to us. ? you are not free tomorrow , I’ll go without you. ?歸納 : 、 表語從句 、 同位語從 句 、 介詞后面的賓語從句只能用whether, 不能用 if ; or not 時(shí) , 用 whether whether whetherIf 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… 2. 賓語從句:從句在句