英语改错题句子哪个部分错了,请改正.When have you had your lunch How long have

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英语改错题
句子哪个部分错了,请改正.
When have you had your lunch
How long have you been to Beijing
Don't get off the bus until it will stop .
My uncle has left Shanghai since fifty years ago.
How long ago have you stopped smoking
They told the story as if it has happened to them.

when did you have your lunch?when是不能对完成时提问的.(不是很肯定.)
how long have you been in beijing.to只表示去,不能表示在.
don't get off the bus until it stops.until,后面跟一般时态表将来.
my uncle left shanghai since fifty years ago.有了ago这个词表过去,所以不用完成时.
how long ago did you stop smoking.同理,有了ago,就用一般过去时.
they told the story as if it had happened to them.前面told是过去时了,那么这个story是在之前发生的事,所以用had过去完成时

英语改错题句子哪个部分错了,请改正.When have you had your lunch How long have 改错：where have you had your lunch yesterday? 句子改错划线部分1.how long have you begun tostudy English? 2.i have 改错：How long have you been starting your class? How long have you had your watch?这句话对吗? Have you had your lunch yet? 初二英语改错.急.Where have you had your lunch yesterday?——— —— ———— i have alreay had my lunch 【】you [ ]your lunch [ how long have you had to wait have you had your lunch yet 和 did you have your lunch yet的区别 What does your sister have lunch 哪个单词错了 When do you have lunch at 哪里错了?