-Why I coulden't get you on the phone this moring.-We__tenni

-Why I coulden't get you on the phone this moring.-We__tennis in the yard when you phoned me.
A couldbe playing B must be playing
C must havebeen playing D should have played

fkzz 1年前已收到1个回答举报

lym914 幼苗

共回答了14个问题采纳率：85.7% 举报

C ---今早我没能给你打通电话.
---当你给我打电话的时候,我们一定是正在院子里打网球.
情态动词+ have done 表示对过去的推测.
用进行时表示那时正在做某事

1年前追问

fkzz 举报

可是C是过去完成进行时啊，也可以用在情态动词+ have done 里吗

举报 lym914

可以的。 havebeen playing 是现在完成进行时

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你能帮帮他们吗

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