作业帮I have been to Beijing twice 为什么用现在完成时
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/10 10:31:31
I have been to Beijing twice 为什么用现在完成时
因为去北京的动作对现在造成了影响
你知道北京的一些情况 再问： 1.people began to use taxi in 1909 2.people have begun to use taxi since 1909 这两句是同义句吗
再答： 2.people have been on to use taxi since 1909 began 不能和短时间连用 这样就相等了
再问： 没懂，能再说详细点吗
再答： began 是瞬间动词 与段时候连用要改成bee on
你知道北京的一些情况 再问： 1.people began to use taxi in 1909 2.people have begun to use taxi since 1909 这两句是同义句吗
再答： 2.people have been on to use taxi since 1909 began 不能和短时间连用 这样就相等了
再问： 没懂，能再说详细点吗
再答： began 是瞬间动词 与段时候连用要改成bee on
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