1、.,1,The use of “it” asa form of an object,.,2,He found it difficult to stop smoking. I think it best that you should do more exercise. She thought it no good worrying about him.,It作形式賓語 代替不定式短語,從句或動詞-ing。,.,1.It 用作形式賓語,當(dāng)不定式（短語）、動名詞（短語）或從句在句子中作賓語時(shí)，為保持平衡，避免句式結(jié)構(gòu)的混亂，常用it作形式賓語，而將真正的賓語放在句尾。此時(shí)it只起引導(dǎo)作用，無意義。

2、,S + v + it+,adj. n,(for sb) to do sth. 從句 doing sth,+, find possible S+ think + it + necessary +( for sb. ) to do sth./that-clause feel important ,Sentence patterns:,形式賓語, a rule 2. S+ V + it + ones duty + ( for sb. ) to do sth. /that-clause an honour ,3. S + V + it + no good + doing sth. no use,.,

3、5,完成句子,（1） They _（發(fā)覺難） to finish their work in two days. （2） We _（認(rèn)為是我們的職責(zé)） to clean our classroom every day. （3） It is important _（對她來說） to cometo the party.,found it difficult,think it our duty,for her,.,6,作形式賓語( Preparatory Subject ),為了記憶方便我們把該句型總結(jié)為6123結(jié)構(gòu)。,6指主句中常用的動詞：think,believe,make,find, cons

4、ider,feel； 1指的是形式賓語it； 2指的是賓補(bǔ)的兩種形式：形容詞或名詞； 3指的是真正賓語的三種形式：不定式短語，動名詞短語 或從句。,We think it our duty to clean our classroom every day. He felt it important learning English well. They found it difficult that they would finish their work in two days.,.,7,1.The fact that she was foreign made _difficult for

5、her to get a job in that country . A. So B. much C. that D. it 2. The doctor thought _would be good for me to have a holiday . A. this B .that C . one D . It 3. I dont think _ possible to master a foreign language without much memory work. A. this B. that C. its D. it,.,8,4.It 作形式賓語的特殊用法,1. 某些表示“喜、怒

6、、哀、樂”的動詞，如like, enjoy, love, hate, dislike, appreciate等 后往往不能直接接賓語從句；必須先由it擔(dān)任形式賓語,再接從句.,We would much appreciate it if you could do us that favour. 要是你們能幫我們這個(gè)忙，我們將非常感激。 Id prefer it if I didnt have to finish the work. 要是我不必完成那項(xiàng)工作，那就太好了。,.,9,2.某些含有介詞的動詞短語如see to, depend on, answer for, rely on, insis

7、t on, look to, stick to 等結(jié)構(gòu)中往往不能直接接賓語從句；必須先由it擔(dān)任形式賓語,再接從句.,Ill see to it that everything is ready in time. 我將負(fù)責(zé)按時(shí)做好一切準(zhǔn)備。 You may depend on it that Tom will help you with your English. 你放心，湯姆會幫助你學(xué)英語的。 Im counting on it that you will come. 我指望著你會來。,.,10,I like _ in the autumn when the weather is clear and bright. A