i have been felling better since the doctor came 时态的用法为什么后面是 the doctor came 而不是 the doctor has came还是两个都可以还有为什么前面用 been felling

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i have been felling better since the doctor came 时态的用法为什么后面是 the doctor came 而不是 the doctor has came还是两个都可以还有为什么前面用 been felling
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i have been felling better since the doctor came 时态的用法为什么后面是 the doctor came 而不是 the doctor has came还是两个都可以还有为什么前面用 been felling
i have been felling better since the doctor came 时态的用法
为什么后面是 the doctor came 而不是 the doctor has came
还是两个都可以
还有为什么前面用 been felling

i have been felling better since the doctor came 时态的用法为什么后面是 the doctor came 而不是 the doctor has came还是两个都可以还有为什么前面用 been felling
since引导从句,主句完成时,从句过去时,主句是现在完成进行时,你们刚接触这个时态吧,还有Been是be的过去分词,所以用feeling,明白了吗?希望对你有用,手机码字不容易,正在冲采纳率,望采纳!谢谢!

这是一条语法规则,since引导的从句中,主句用过去完成时,而从句用一般过去时。所以后面是 the doctor came ,而不是 the doctor has came。
另外根据句意,是指现在感觉良好,所以用了进行时。

你记住,一般since从句用过去时,主句用完成时。医生来了,动作发生在过去,我感觉好多了,并不是过去感觉好多了现在就不好了,而是到现在为止感觉好多了(对现在有影响,用完成时)
P.S.你的feeling拼错了

I am not felling very well. I__have__to see the doctor.
我感觉很不好,我必须去看医生!
have to 必须