高中英语语法之it形式主语.ppt

The use of “it“,第一节 形式主语,It 作形式主语替代that从句 1）It is + adj. +that从句 2）It is +v-ed +that 从句 3）It is a pity ( a shame . ) that . 4）It happens (seems， looks， appears ) that. 5）It is time ( about time ，high time ) that . It is the first ( second . ) time that .,1）It is + adj. +that从句 It is clear ( obvious， true， possible certain) that . . It is important ( necessary， right， strange，natural.) that . 从句中要用虚拟语气（should + v.原形） 1.It is important that students today master English. 2.It is perfect that you can come to my birhtday party. 3.It is obvious that we need more practice. 4.It is strange that he (should) have made a mistake. 5.It is natural that he fall in love with such a beautiful girl. 6.Its strange that he feel so angry.,2）It is +v-ed +that 从句 It is said that Andy Lau will come to Guangzhou tomorrow. It was reported that there were 300 people died of this disease. It is known that Changjiang River is the second longest river in the world. It was suggested that the sports meet be put off until next Saturday. It is desired that we (should) get everything ready by tonight. It was ordered that the medicine be sent there by plane.,3）It is a pity (a shame, no wonder, better) that It is a pity that we didnt grasp that opportunity. It was a great pity that you (should) have made so many mistakes in your math exercise. It will be better that she stay with her grandmother.,It happens (seems， looks， appears ) that. It happened ( so happened ) that he met his teacher in the street. It happened that her parents were both out. It happened that the harvest was bad that year. It happened that I had driven that kind of car before. It happened that I was standing next to him when he collapsed. It seems that she is very sad.,it 用作形式主语,指代从句,1) It is + adj. +that从句 It is clear ( obvious， true， possible certain) that . . It is important ( necessary， right， strange，natural.) that . 从句中要用虚拟语气（should + v.原形） 2) It is +v-ed +that 从句 It is said (reported， learned) that . . It is suggested ( ordered /demanded/insisted/commanded. ) that(should + v.原形) 3) It is a pity ( a shame . ) that . that后的从句一般用虚拟语气（should + 动词原形） 4) It happens (seems， looks， appears ) that. 5). It is time ( about time ，high time ) that . 虚拟语气 It is the first ( second . ) time that (完成时),1.真可惜，他没来。it is a pity that 2.我们爱自己的父母是很自然的。it is natural that 3.很明显，他是是个勤奋又上进的人。it is obvious that 4.我恰巧在书店里碰到他。it happened that 5.人人都建议他提前预习考试的内容，但是他不听，难怪他不及格。it was suggested no wonder that 6.掌握好英语和计算机技术对于现代人来说是很重要的。 it is very important that 7.好像他过几天就会回来。it seems that 8.真遗憾，这样的事竟然发生在你的班上。it is a pity tha