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1、主语从句常用结构1.It is 名词 从句 It is a fact that 事实是 It is an honor that 非常荣幸 It is common knowledge that 是常识能获邀参加你们的婚礼真是不胜荣幸风就是流动的空气,这是常识可惜他由于一个拼写错误没有得满分,Its a great honor that I have been invited to your wedding,Its common knowledge that wind is moving/flowing air,Its a pity that he didnt get full marks be
2、cause of a spelling mistake,2.It is 形容词 从句(1)It is clear/obvious/likely/possible that(2)Its surprising/strange/natural/necessary/important that+(should)+动词原形,今年这所大学将招收更多的新生是真的 知识就是力量,这一点是不言而喻的学会处理生活中的各种挑战对我们来说是很有必要的,Its true that the university will enroll more new students(freshmen),Its clear that
3、knowledge is power,Its necessary that we should learn how to deal with various challenges.,(3)It is 不及物动词 从句 It seems/appears that 似乎 It happens that 碰巧这幅画好像倒挂了(appear)好像我在梦境中回到过我曾经就读的高中(seems)车祸发生的时候碰巧我在我的一个朋友散步(happen),It appears that this picture hangs upside down,It seems that I went back to the
4、 high school where I once studied in my dream,It happened that I was walking with one of my friends when the car accident occurred,I happened to be walking with one of my friends when the car accident occurred,(4)It 过去分词 从句 It is reported/said that 据说/据报道 It has been proved that 已证实 一般认为,印第安人是美洲大陆最早
5、的居民 Its generally believed that Indians are the first settlers in American continent.已证实这种药对一般感冒疗效显著,且没有副作用It has been proved that the medicine is effective to common cold and does not have side effects,1.什么引起这个奇怪的现象还不为人知(remain)What caused this strange phenomenon remains unknown 2.谁当我们的新校长还尚未决定Who
6、will be our new president hasnt been decided 3.这种药是否有效还有待观察(remain)It remains to be seen whether this medicine is effective 7.让我感到十分惊讶的是学生们异乎寻常地安静(what)What surprised us greatly was that the students are unusually quiet,据说她两年前在美国留学 Its said that he studied in America two years ago2.据说她现在正在美国留学 Its s
7、aid that he is now studying in America 3.据说她现在懂三国外语 Its said that he knows three foreign languages,He is said to have studied in America two years agoHe is said to be studying in America nowHe is said to know three foreign languages,我碰巧上周在teens 读到过这篇感人的文章I happened to have read this moving article in Teens last week你昨天打电话的时候我碰巧在看电视I happened to be watching TV when you called me yesterday你说到的那位先生碰巧是我妈妈以前的数学老师The man you mentioned happens to be my mothers former math teacher,
