They( )for shanghai on Friday.shall we go to see them off at the train station A left B were leavingC have left D are leavingc为什么不可以Old people must ( )A be spoken to politely B speak to polite C be spoken politely D speak polite那个to

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They()forshanghaionFriday.shallwegotoseethemoffatthetrainstationAleftBwereleavingChaveleftDareleavin

They( )for shanghai on Friday.shall we go to see them off at the train station A left B were leavingC have left D are leavingc为什么不可以Old people must ( )A be spoken to politely B speak to polite C be spoken politely D speak polite那个to
They( )for shanghai on Friday.shall we go to see them off at the train station
A left B were leaving
C have left D are leaving
c为什么不可以
Old people must ( )
A be spoken to politely B speak to polite C be spoken politely D speak polite
那个to为什么要有啊?c为什么不可以
It was （ ）weather that they decide to go out for a picnic.
A such fine B such a fine
为什么没有a
-I don not have a parner to play table tennis with.
-why ( )a sport club to practise a lot?
A don't join B not joining C not to join D don't you join
not 和why don't you 的区别
（ ）are you gong to write this story
-about five pages
A how often B how soon C how long D how fast
how long 表时间为什么可以说明故事的长短,可以表具体吗?

They( )for shanghai on Friday.shall we go to see them off at the train station A left B were leavingC have left D are leavingc为什么不可以Old people must ( )A be spoken to politely B speak to polite C be spoken politely D speak polite那个to
They( )for shanghai on Friday.shall we go to see them off at the train station
A left B were leaving
C have left D are leaving
答案d,c为什么不可以
D 是对的,语法知识：一般现在时表示将来计划中的事情
而C是 一般完成时,和提议不符,从题意看应该是将要在周五离开.
Old people must ( )
A be spoken to politely B speak to polite C be spoken politely D speak polite
答案a,那个to为什么要有啊?c为什么不可以
改为主动语态你就明白了
you must speak to old people politely
你对老人讲话要礼貌
其被动语态就为
old people must be spoken to politely.
和老人讲话要礼貌（中文还是采用了主动语态的翻译,否则就不伦不类了,老人必须被礼貌地讲话）
所以选 a （如果C改为speak politely 也可以,但是意思比较勉强 老人必须说话礼貌）
It was （ ）weather that they decide to go out for a picnic.
A such fine B such a fine
答案A,为什么没有a
很明显天气是不可数的,因此不能用 a 来修饰
-I don not have a parner to play table tennis with.
-why ( )a sport club to practise a lot?
A don't join B not joining C not to join D don't you join
答案d,请教why not 和why don't you 的区别
选 Why not 这句话就没有主语了 不能成为一个完整的句子
如此时就可以把疑问句改为陈述句
you join a sprot club to practise a lot.
一般疑问句
do you join a sprot club to practise a lot.
表原因的特殊疑问句
why do you join a sport club to practise a lot?
表原因的特殊疑问句的反问句
why don't you join a sport club to practise a lot?
（ ）are you gong to write this story
-about five pages
A how often B how soon C how long D how fast
答案c,how long 表时间为什么可以说明故事的长短,可以表具体吗?
how long 表示 "多长" 即可以表示时间的长短,也可以表示其他方面的长短

They left to Shanghai My father left for Shanghai有什么区别?1.They left to Shanghai 2.they left for Shanghai to for 有什么区别？ They have left for Shanghai already改为同义句They have _____ ______ to Shanghai already they ____live in shanghai for two years 怎么写 They left for shanghai by air last week.同义句 My parents are not at home .They (leave) for shanghai they have -------(been,arrived)in shanghai for 2 days. 找错:They leave for shanghai last wednesday morning They will stay in Shanghai [for a wweek]next month[划线提问] As a matter of fact,they would rather leave for Beijing than ________ in Shanghai. they,for,stay,least,will,in,at,2,months,Shanghai.这些词连词成句 They left for Shanghai on ____ day.A.the same B.such They are going to（离开）for Shanghai this Sunday morning. they,for,stay,least,will,in,at,2,months,Shanghai.这些单词连词成句. They are leaving for Shanghai the day ___tomorrow.填哪个介词 They()(flew)to Shanghai yesterday when they g_______ to Shanghai They decided_______(not leave)Shanghai. 他们离开上海两天了 怎么用英文说 They have ____ ____ ____ Shanghai for two days