高考英语复习it的用法公开课(共38张PPT)

2. It is ten years _D___ I came to this town.
3. It is ten years ago __B__ I came to this town.
4. It is the third time __B_ I _h_a_v_e_v_i_s_it_ (visit) to this town.
要点2： it指时间的几个重要句式
• It is / has been 3 years since I visited your company. 【句式1】 it is /has been + 段时间 + since ----自从----多久了
• It was 3 hours before he realized the truth. 【句式2】 It was + 段时间 + before ---过了多久-----才---
summary1：it作代词
•It was Sunday.
指时间
•It was a sunny day.
指天气
•It was two miles away. •It was crying. •It was big big wolf’s house.
指距离
未知性别的婴儿或孩 子或身份不明的人
指示代词:指代this或that
5. It was 2 am. _A__Tangshan earthquake took
place.
A. when
B. that C. before
D. since
Complete the “it” sentences Quit
drinking? Tough!
It is tough for them _to__q_u_it__d_r_in_k. ing Igtivisehuaprddrfionrktihnegm, htaorgdi,viet iusp, fdoritnhkeimng.
句型： It + be + n./ adj./(for/of sb. ) to do sth.
•It is no good\no use crying over spilt milk
句型： It +be +(no) good/ use /useless / senseless+ v-ing
summary2：it作形式主语
• The two girls are so alike that strangers find __it_difficult to tell one from the other.
1.（求助信）我觉得要提高英语成绩很难。 I find it difficult to improve my English.
goat decided to go for a walk to the park though it was two miles away.
it作代词
Unluckily he found he got lost and walked into a strange house. There was a baby in the house. It was crying. Suddenly he realized that it was big big wolf’s house. He quickly get away from it before big big wolf came back.
I、 代词 it(pronoun)
II. 形式主语it(formal subject)
III.形式宾语it(formal object)
IV. 用在强调句型中的 it(emphatic sentence )
V. 用 在 固 定 结 构 中 的 it(fixed structure)
it作代词
It was Sunday. It was a sunny day. Lazy
See! A big hen ploughing!
It is a wonder __to__se_e__a_b_i_g_h__en__p_l_o_u_g_h_in__g___. It is a surprise ____to__s_e_e_s_o_b_i_g_a__h_e_n_________. (看到如此大的一只母鸡是一件很惊讶的事情)
Why did you pretended to like_i_t _?” (13四川）The traffic on the main streets has a longer green signal thant_h_a_t on the small ones.
(11福建）We have various summer camps for your holidays. You can choose _o_n_e_ based on your own interests.
总结
•it指“同一个” •one泛指“同一类，不同一个”；。 •that用来代替前面特指的名词，相当于the+名词单数， 有时候可与the one互换。 •them, ones, those 是他们对应的复数形式
高考再现
(10广东)He asked his teacher, “Sir, the water is awful.
it作形式宾语
she, hard, understand
She find it hard to make herself understood.
summary3：it作形式宾语
She find it hard to make herself understood. 句型： 动词+宾语+宾语补足语(n. / adj.) for sb.+ to do/doing/that
seems; back in a few days It seems that he will be back in a few days.
减肥好难， 花老长时 间咯！
It takes him a long time to lose weight.
summary2：it作形式主语
•It is hard for them to give up drinking. •It is a wonder to see a big hen ploughing. •It's kind of you to help me with the problem.
（14广东）Last year, my brother and I went to Miami for a vacation. Some of my friends who had been there before said _i_t_ was a wonderful holiday destination.
(10全国)The doctor thought _i_twould
be good for you to have a holiday.
（07山东） ___it__ worries me the way
he keeps changing his mind
模仿造句
1.学习英语很有意思。 It is interesting to study English. 2.整天玩网络游戏是不好的。 It is no good playing computer games all day. 3.据说他已经通过了考试。 It is said that he has passed the exam. 4.我觉得养成课堂上做笔记的习惯会很有用。 I feel that it would be beneficial to form the habit of taking note in class.
It is interesting/an interest wk.baidu.comhat __X_i_a_o_S_h_e_n_y_a_n_g__w_e_a_r_s_w__o_m__en__’s_c_l.othes
It is said that X_ia_o__S_h_e_n_y_a_n_g__is__m_o_r_e_p__o_p_u_la_r__th_an Zhao (popular than).
It is+ __n_o__u_se_\_n_o_g_o_o_d__ + doing sth. Oh! My milk is spilt(溢出).
It is no good\no use _cr_y_i_n_g__o_v_er__s_p_il_t_m__ilk (cry over spilt milk).
• It is interesting/an interest that Xiao Shenyang wears women’s clothes.
• It is said that Xiao Shenyang is more popular than Zhao.
句型： It +be +n./ adj. v-ed +that 从句
•He quickly get away from it. 代替前文提到过的事物，
以避免重复:
要点1：区分 it, them, that, those, one, ones
I had a good book, but I lost it yesterday，so I’ll buy a new one in Xing Hua Book Store tomorrow. The books in Xing Hua Book Store is of high quality than those / the ones in other book stores.
• It seems that he will be back in a few days.
句型： It happens (seems， looks， appears ) that...
•It takes him a long time to lose weight.
句型： It takes sb. some time to do sth.
高考再现
(09年广东) Jane was walking round the department stores. She remembered
how difficult __it__ was to choose a
suitable Christmas present for her father.
• It will be 3 months before they complete the bridge. 【句式3】 It will be +段时间 + before --要过多久----才--
要点2： it指时间的几个重要句式
• It was 10 o’clock when the big fire broke out . 【句式4】 it was + 点时间 + when ---某事发生于---某一时刻--
• It is the second time I have heard of this . 【句式5】 It /this is/was the +序数词+ time + 现在完成时态/过去完 成时-（表示某人第几次做某事）
对比训练
卓越 舜耕
1. It will be years __C__ we meet again.
高考改编
• No matter where he is, he makes _i_t_a rule to go for a walk before breakfast.
• Why don’t you bring __i_t__ to his attention that you’re too ill to work on?
it常用在动词find，think，make，feel expect，consider 等动词后做形式宾语 •I think it important to make a summary in time. •I find it a good habit that we make a summary in time. •He felt it no use learning English without speaking it.