英语问题9道1、---Have you known Dr.jackson for a long time?\----Yes,since she___the Chinese Society为什么填joined而不是has joined2、---If the wather had been better,we could have had apicnic.But it_all day为什么填rained而不是

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英语问题9道1、---Have you known Dr.jackson for a long time?\----Yes,since she_____the Chinese Society为什么填joined而不是has joined2、---If the wather had been better,we could have had apicnic.But it___all day为什么填rained而不是
英语问题9道
1、---Have you known Dr.jackson for a long time?\
----Yes,since she_____the Chinese Society
为什么填joined而不是has joined
2、---If the wather had been better,we could have had apicnic.But it___all day
为什么填rained而不是has rained
3、---Officials say that few patients___with the virus owing to the effective prevention
为什么填are infected而不是have been infected
4、---Teenagers___their health because they play computer ganmes too much.
为什么填are damaging 而不是damaged
5、---By the time he realizes he___into a trap.it"ll be too late for him to do anything about it.
为什么填has walked而不是walks
6、---The flowers were so lovely that they___in no time .
为什么填were sold 而不是had been sold
7、---Did you tidy your room?
---No ,I was going to tidy my room but I___vistors
为什么填had而不是have had
8、They___two free tickets to Canada,otherwise they'd never have been able to afford to go.
为什么填got而不是had got
9、When I called you this morning,nobody answered the phone.Where___?
为什么填were you而不是did you go

英语问题9道1、---Have you known Dr.jackson for a long time?\----Yes,since she_____the Chinese Society为什么填joined而不是has joined2、---If the wather had been better,we could have had apicnic.But it___all day为什么填rained而不是
首先,你得多看一看关于完成时的例句,清楚它在什么情况下才能使用,不要见了过去就用完成,风牛马不相及啊
1、---Have you known Dr.jackson for a long time?\
----Yes,since she_____the Chinese Society
为什么填joined而不是has joined
since从句中只能用一般过去式,主句中才加has
2、---If the wather had been better,we could have had apicnic.But it___all day
为什么填rained而不是has rained
这跟完成时没有关系,你要清楚完成时的意义,
3、---Officials say that few
patients___with the virus owing to the effective prevention
为什么填are infected而不是have been infected
答案同二,只是一般现在的状态,强调被感染的原因,跟完成时没关系
4、---Teenagers___their health because they play computer ganmes too much.
为什么填are damaging 而不是damaged
play用的就是一般现在式,要统一,为了说明一种一直持续进行的状态
5、---By the time he realizes he___into a trap.it"ll be too late for him to do anything about it.
为什么填has walked而不是walks
他已经跳进一个圈套,注意“已经”,现在已完成,但并不是一旦表示现在完成的意义就用完成时,要看作者的意思,以及是否对现在造成影响
6、---The flowers were so lovely that they___in no time .
为什么填were sold 而不是had been sold
so..that..从句中一般是不用完成时的,that后面肯定不用完成时,多培养培养语感吧
7、---Did you tidy your room?
---No ,I was going to tidy my room but I___vistors
为什么填had而不是have had
但我有客人,没有完成意义
8、They___two free tickets to Canada,otherwise they'd never have been able to afford to go.
为什么填got而不是had got
不要看见过去时就用完成式,这个完全不靠谱
9、When I called you this morning,nobody answered the phone.Where___?
为什么填were you而不是did you go
也可以填did you go,跟were you是同一含义,你去哪了

1. since 后面用过去时，不用现在完成时。
2. 陈述一个事实
3. 为什么？
4. 和后面的时态要保持一致
5. 要体现 walk 在先，realize 在后
6. 陈述一个事实
7. 陈述一个事实
8. 陈述一个事实
9. 为什么？我认为两者皆可

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1、---Have you known Dr.jackson for a long time?\
----Yes,since she_____the Chinese Society
为什么填joined而不是has joined
since加过去时
2、---If the wather had been better,we could have had apicnic.But it___all day
为什么填rained而不是has rained
如果用完成时，表示对现在有影响。应该是过去时
3、---Officials say that few patients___with the virus owing to the effective prevention
为什么填are infected而不是have been infected
应该都可以，看语境的细微差别
4、---Teenagers___their health because they play computer ganmes too much.
为什么填are damaging 而不是damaged
一个表现在，一个表过去。前后时态要一致
5、---By the time he realizes he___into a trap.it"ll be too late for him to do anything about it.
为什么填has walked而不是walks
意识到的事用完成时
6、---The flowers were so lovely that they___in no time .
为什么填were sold 而不是had been sold
没体现该事件的影响，不用完成时
7、---Did you tidy your room?
---No ,I was going to tidy my room but I___vistors
为什么填had而不是have had
时态前后要一致
8、They___two free tickets to Canada,otherwise they'd never have been able to afford to go.
为什么填got而不是had got
虚拟语气用过去时
9、When I called you this morning,nobody answered the phone.Where___?
为什么填were you而不是did you go
where were you你在哪里？ where did you go?你当时要去哪里？

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1.因为这里必须用过去时。凭理解。
2.如果用后面这种时态，应该讲has been raining
3.这两种表达方法其实都没有错
4.注意后面的they play用的不是过去时，不用多讲了吧
5.因为后面那句话说的是他掉进陷阱的后果，这是一个典型应用
6.这里并没有说花儿卖得快所造成的后果
7.这里用had是因为这只是表示一个动作，表明就在那时有...

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