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(必修)英语5二年级《Theme B Society and Nature Our Planet Unit 4 Living Planet Grammar》优秀教案
连接代词 :who/ whom/whose/what/which/wh_ever
连接副词: when/where/why/how/how long
二、各种连接词的用法:
连接词 that、whether、if 不在它们引导的主语从句 中充当句子成分。
2. 连接代词who、whose、what、 which等都在句子中担当一个句子成 分。比如:主语、宾语、表语、定语等等。
3. 关系副词when、where、how、why、how long等分别在句子中作时间状语、地点状语、方式状语、方式状语等等。
主语从句(The Subject Clause)
作句子主语的从句叫主语从句。主语从句通常由从属连词that,whether,if和连接代词what,who,which,whatever,whoever以及连接副词how,when,where,why等词引导。that在句中无词义,只起连接作用;连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用,在从句中充当从句的成分。例如:
What he wants to tell us is not clear. ???????????????? 他要跟我们说什么,还不清楚。
It is known to us how he became a writer. ???????? 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.
英语晚会将在哪里举行,还没有宣布。
由it作形式主语的主语从句
常以it作形式主语的句型有:
A. It+be+形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that从句。如:
It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。
It is probable that he told her everything. 很可能他把一切都告诉她了。
B. It+be+名词词组(no wonder, an honor, a good thing, a pity, no surprise, etc.)+that从句。如:
It’s a pity that we can’t go.?? 很遗憾我们不能去。
It’s no surprise that our team should have won the game. 我们没赢这场比赛真意外。
C. It+be+过去分词(said, reported, thought, expected, decided, announced, arranged, etc.)+that从句。如:
It is said that Mr. Green has arrived in Beijing. 据说格林先生已经到了北京。
It is reported that China has sent another man-made earth satellite into orbit.
据报道中国又成功地发射了一颗人造地球卫星。
D. It+seems, happens等不及物动词及短语+that从句。如: