1He has a friend who____ the piano very well.这种句型里的单词要加s还是原型?2 I didn't know________.A where does he live B where did he liveC where he lives D where he lived这种句型的问句是怎么判断的?3 Where_________live bef

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1He has a friend who____ the piano very well.这种句型里的单词要加s还是原型?2 I didn't know________.A where does he live B where did he liveC where he lives D where he lived这种句型的问句是怎么判断的?3 Where_________live bef
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1He has a friend who____ the piano very well.这种句型里的单词要加s还是原型?2 I didn't know________.A where does he live B where did he liveC where he lives D where he lived这种句型的问句是怎么判断的?3 Where_________live bef
1He has a friend who____ the piano very well.这种句型里的单词要加s还是原型?
2 I didn't know________.
A where does he live B where did he live
C where he lives D where he lived
这种句型的问句是怎么判断的?
3 Where_________live before you came here?
A did you used to B did you use to
C ues he to D he used to
这题为什么选B不选A呢?
第一题如果只有第三人称单数要不要加s呢？

1He has a friend who____ the piano very well.这种句型里的单词要加s还是原型?2 I didn't know________.A where does he live B where did he liveC where he lives D where he lived这种句型的问句是怎么判断的?3 Where_________live bef
应该是plays,因为前面a friend是单数所以定语从句谓语也是用单数,就是第三人称单数才加s的呀
D,首先这个是宾语从句,从句要用陈述语序,所以排除A,B,而且前面主句是过去式,所以从句要和主句一致也用过去时,所以选D
这个题是used to do改疑问句,是did you use to,因为前面已经用did了,动词用原形就好了.

1，plays
2,按照陈述句的顺序，可以根据有没有问号判断。应该选D吧
3，我也觉得选a..

1. play
2.C
3.他问你，在你来之前你住哪里？所以用did.

1 plays 固定搭配 play the piano
2 D 这是个陈述句 表示过去
3 前面不是有个did 后面的谓语动词要用动词原形形式

1.是要加s的，因为这是一个从句，who plays zhe piano very well 是修饰a friend 的，a friend是三单，所以要加s。
2.这也是一个从句，后面要用陈述句语序（即主谓宾的顺序等），又因为他前面使用过去时，所以从句也要用过去时，应选D
3.did是do的过去时，是一个助动词，后面的动词应用原型，所以是选B.
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1.是要加s的，因为这是一个从句，who plays zhe piano very well 是修饰a friend 的，a friend是三单，所以要加s。
2.这也是一个从句，后面要用陈述句语序（即主谓宾的顺序等），又因为他前面使用过去时，所以从句也要用过去时，应选D
3.did是do的过去时，是一个助动词，后面的动词应用原型，所以是选B.
希望我的回答能给你带来帮助！

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