[高中英语必修选修]高中英语课件选修6unit3it的总结
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Gramma r
it的用法
Hale Waihona Puke Read and analyze the following sentences. S1. What is this? It is a cellphone. S2. What is that? It is his dictionary. S3. Whose book is this? It is Mr Cheng’s. S4. Where is your English book? It is here. S5. My cat is missing, I can’t find it anywhere. Pron. it ---词性? ______ 可以用作人称代词，代指__________________ 前文提到的事物. that. 还可以替代指示代词_____ this. 或______.
他居然会这样说，真是奇怪。 he ( should ) think so It is a great pity that___________________. 他居然会这样想，真是一件憾事。
It is necessary that he be sent to Beijing right away ___________________________. 有必要立即派他去北京。
It is difficult for me to answer this question.
It is a pity that you did not take part in the party
跟踪训练2：It is+ adj. + that从句
很明显他已经知道了那个坏消息。
It is obvious that he has known the bad news.
e.g. It is much fun working with him.
和他一起工作很有意思。
3) 主语从句 e.g. It is strange that it hasn’t been noticed before. 真奇怪, 它以前没有引起注意。 It is a wonder that he is still alive. 他居然还活着, 真是个奇迹。
do the exercises（3）（6） （14） in 《对点集训》 on Page41-42 in 《全程设计》 quickly.
Read and analyze the following sentences. It is obvious that the water was to blame. It is certain that our class will do a good job in the final exam. Is it possible that he will become the chairman of our country? 形式主语 ,句子真正的主语 分析：it是___________ 是——___________________ that引导的主语从句 除了that从句可以做真正主语，还有哪些可 以做真正主语？
跟踪练习1：
在一个小时内完成任务是不可能的。
It is impossible to finish the task in an hour.
学好英语要花很长时间。
对我来说回答这个问题很难。 你没有参加这个聚会是个遗憾。
It takes long time to learn English well.
下面两道题有什么特别之处？
1.It was urgent that he _________ her immediately.
A. calls B. called C. call D. would call 2.It is strange that such a thing ___ in your school. A. will happen B. happens C. should happen D. happened
It做形式主语
It 可以用作先行词作为句子的主语, 而把句子的真正主语移到后面去, 可以移到后面的主语是： 1) 不定式 It is important to learn English well.
2) 动名词
用no good, no use, great fun, a waste
等名词作表语；
真的，我一点都不喜欢她的绵羊音。 （sheep voice）
It is true that I don’t like her sheep voice at al 很有可能火箭队不能进入季后赛（playoffs） It is possible that Rockets can’t enter the playoffs.
回顾第二单元 有关虚拟语气语法
It’s necessary/strange/natural/ important/pity/no wonder/impossible + that 从句 中的动词要用虚拟, 即(should)+动词原形
It is strange that_______________________. he ( should ) say so
Read and analyze the following sentences. It is Friday today. Date It was very cold last Monday. weather It is about 8:30 now. time distance It is about 25km from Longxian to Bazi. It lies in the south of Shaoguan city. place It is 40°C ! You got a high fever! Temperature Conclusion :it 可以用作非人称代词，表示 日期 天气 时间 距离 地点 温度 _____,_____,______,______,______,______, 等。
it的用法
Hale Waihona Puke Read and analyze the following sentences. S1. What is this? It is a cellphone. S2. What is that? It is his dictionary. S3. Whose book is this? It is Mr Cheng’s. S4. Where is your English book? It is here. S5. My cat is missing, I can’t find it anywhere. Pron. it ---词性? ______ 可以用作人称代词，代指__________________ 前文提到的事物. that. 还可以替代指示代词_____ this. 或______.
他居然会这样说，真是奇怪。 he ( should ) think so It is a great pity that___________________. 他居然会这样想，真是一件憾事。
It is necessary that he be sent to Beijing right away ___________________________. 有必要立即派他去北京。
It is difficult for me to answer this question.
It is a pity that you did not take part in the party
跟踪训练2：It is+ adj. + that从句
很明显他已经知道了那个坏消息。
It is obvious that he has known the bad news.
e.g. It is much fun working with him.
和他一起工作很有意思。
3) 主语从句 e.g. It is strange that it hasn’t been noticed before. 真奇怪, 它以前没有引起注意。 It is a wonder that he is still alive. 他居然还活着, 真是个奇迹。
do the exercises（3）（6） （14） in 《对点集训》 on Page41-42 in 《全程设计》 quickly.
Read and analyze the following sentences. It is obvious that the water was to blame. It is certain that our class will do a good job in the final exam. Is it possible that he will become the chairman of our country? 形式主语 ,句子真正的主语 分析：it是___________ 是——___________________ that引导的主语从句 除了that从句可以做真正主语，还有哪些可 以做真正主语？
跟踪练习1：
在一个小时内完成任务是不可能的。
It is impossible to finish the task in an hour.
学好英语要花很长时间。
对我来说回答这个问题很难。 你没有参加这个聚会是个遗憾。
It takes long time to learn English well.
下面两道题有什么特别之处？
1.It was urgent that he _________ her immediately.
A. calls B. called C. call D. would call 2.It is strange that such a thing ___ in your school. A. will happen B. happens C. should happen D. happened
It做形式主语
It 可以用作先行词作为句子的主语, 而把句子的真正主语移到后面去, 可以移到后面的主语是： 1) 不定式 It is important to learn English well.
2) 动名词
用no good, no use, great fun, a waste
等名词作表语；
真的，我一点都不喜欢她的绵羊音。 （sheep voice）
It is true that I don’t like her sheep voice at al 很有可能火箭队不能进入季后赛（playoffs） It is possible that Rockets can’t enter the playoffs.
回顾第二单元 有关虚拟语气语法
It’s necessary/strange/natural/ important/pity/no wonder/impossible + that 从句 中的动词要用虚拟, 即(should)+动词原形
It is strange that_______________________. he ( should ) say so
Read and analyze the following sentences. It is Friday today. Date It was very cold last Monday. weather It is about 8:30 now. time distance It is about 25km from Longxian to Bazi. It lies in the south of Shaoguan city. place It is 40°C ! You got a high fever! Temperature Conclusion :it 可以用作非人称代词，表示 日期 天气 时间 距离 地点 温度 _____,_____,______,______,______,______, 等。