1、2021/7/2312021/7/2321. It is never too old to learn. 活到老活到老, 學到老。學到老。 Look at these proverbs and see what they have in common. 2021/7/2332. It rains cats and dogs. 大雨滂沱大雨滂沱2021/7/2343. It never rains but it pours. 不鳴則已不鳴則已, 一鳴驚人。一鳴驚人。2021/7/2354. It is a poor mouse that has only one hole. 2021/7/236

2、1. It is never too old to learn. 2. It rains cats and dogs. 3. It never rains but it pours.4. It is a poor mouse that has only one hole. “It” is widely used in English. “It” is very useful and can be used in many ways. 2021/7/237The subject position It is amazing that at my age I am still fit. 2. It

3、 is easier to fall than to rise. 3. It is no good crying over spilt milk.“It” can be used in the subject position to stand for _, _ or _.a clausean infinitive-ing formLook at the sentences and think about the way “it” is used.2021/7/238The object position4. I think it best that you should do more ex

4、ercise.5. He found it difficult to accustom himself to getting up early.a clausean infinitive2021/7/239 It is amazing that at my age I am still fit. 2. It is easier to fall than to rise. 3. It is no good crying over spilt milk.4. I think it best that you should do more exercise.5. He found it diffic

5、ult to accustom himself to getting up early. “It” can be used in the subject or object position to stand for _, _ or _.a clausean infinitive-ing form2021/7/2310形式主語句型形式主語句型Its +adj. (possible/ necessary/ important/ easy/ strange/ natural to do / that )Its +n. (pity/ honor/ shame/ wonder) to do sth.

6、Its +adj./ n. doing sth. Its +-ed+ that2021/7/2311 It takes sb. some time to do sth. It seems that It remains a secret/ to be done It matters . Its likely/ unlikely that .2021/7/2312形式賓語句型形式賓語句型Make, think, feel, find, consider + it+ adj. / n. to do sth. Like/ enjoy/ appreciate/ dislike/ hate/ depen

7、d on/ see to /take for granted + it +從句從句 I would appreciate it if you can answer my question.She hates it when you use her books.Will you see to it that luggage is brought back?2021/7/23132. Some young people think they look attractive when they smoke. It seems _ _ Giving up smoking is difficult to

8、 do. It is _ that some young people think they look attractive when they smoke.difficult to give up smoking.Rewrite these sentences using an “it” structure.2021/7/23143. Most people believe smoking causes cancer. It is believed _4. Dont try to quit on a stressful day. It is no use _trying to quit on

9、 a stressful day.that smoking causes cancer.5. My father has quit smoking at last. It is wonderful _ _ that my father has quit smoking at last.2021/7/23156. China produces one third of the worlds cigarettes. It is astonishing _ _7. You are not allowed to advertise cigarettes in this country. It is i

10、llegal _ _ that China produces one-third of the worlds cigarettes. to advertise cigarettes in this country.2021/7/23168. You could suffer from bad health if you keep smoking. It is likely _ _9. You have to take pills to control your blood pressure. It is necessary _ _ for you to take pills to contro

11、l your blood pressure. that you could suffer from bad health if you keep smoking.2021/7/2317 It is a beautiful day. 2. It never rains but it pours. 3. It was time to quite smoking. 4. It is 10 kilometers to the castle. 5. It weighed 4 kg. 6. It s very noise now.7. It is Friday today.8. It lies in th

12、e south of Shaoguan city. It is 40! You got a high fever! who s knocking at the door? It might be the milkmanIt 可指代時間，可指代時間，距離，溫度，距離，溫度，日期，天氣，日期，天氣， 重量，長度，重量，長度，環境，環境， 方位，方位， 性別不明的性別不明的人、人、 嬰兒嬰兒2021/7/2318It/ one/ that 區分它們均作代詞用于指代前文提到的名詞。它們均作代詞用于指代前文提到的名詞。It是是同名同物同名同物；one和和that是是同名異物同名異物I like the

13、bike, but I have no enough money to buy it.I like bicycles, but I cant afford to buy one.The bike which I want to buy is more beautiful than that he has.2021/7/2319One 為為泛指泛指， 相當于相當于a/ an +名詞名詞That 為為特指特指， 相當于相當于the +名詞名詞A chair made of steel is stronger that one made of wood.The water in the cup is hotter that that in the potOne 只能代替只能代替可數名詞單數可數名詞單數，代替可數，代替可數名詞復數用名詞復數用ones; that 既可代替既可代替不可數不可數名詞名詞可以代替可以代替可數名詞單數可數名詞單數，代替可，代替可數名詞復數用數名詞復數用those2021/7/23