1如果只是强调看过这个事实Did he watch the TV play?,如果强调看过了现在不用看了或者其他的对现在的影响用has he watched the TV play?
2 have they decided to accept the challenge?.
3 Are they your friends
1如果只是强调看过这个事实Did he watch the TV play?,如果强调看过了现在不用看了或者其他的对现在的影响用has he watched the TV play?
2 have they decided to accept the challenge?.
3 Are they your friends