来自彭伟成的问题
does和doesn't和did和didn't分别怎么用?用于什么?
does和doesn't和did和didn't分别怎么用?用于什么?
1回答
2020-02-05 00:53
does和doesn't和did和didn't分别怎么用?用于什么?
does和doesn't和did和didn't分别怎么用?用于什么?
doesdoesn't用于第三人称一般现在时的肯定和否定句.diddidn't用于所有人称一般过去式的肯定和否定句