Question

I bought a new house last year,but i ____ my old house yet,so at the moment i have two houses

I bought a new house last year,but i ____ my old house yet,so at the moment i have two houses
A.didn't sell B.have not sold C.had not sold D.don'sell
选哪个和为啥？

Answer 1

I bought a new house last year,but i ____ my old house yet,so at the moment i have two houses
A.didn't sell B.have not sold C.had not sold D.don'sell
选B
我去年买了套新房，但我还没把旧房子卖掉，所以目前我有两套房。
根据at the moment 表目前，据此判断结果状语是到目前为止动词未完成，用haven't yet表示。

追问

如果就时态来看的话，为啥是现在完成时呢？

追答

因为有Yet ，haven't yet 表示“到目前为止尚未”，如果是“handn't ”则跟的是until 到过去某个时间点才，而不是 yet ;此外， 根据at the moment 当前，也可作出现在完成时的判断。

Answer 2

I bought a new house last year,but i ____ my old house yet,so at the moment i have two houses
A.didn't sell B.have not sold C.had not sold D.don'sell
选B
我去年买了套新房，但我还没把旧房子卖掉，所以目前我有两套房。
根据at the moment 表目前，据此判断结果状语是到目前为止动词未完成，用haven't yet表示。