1 read( 注:过去时与原形相同
2 Have , finished
3 has played
4 haven't finished
5 have worked
6 didn't do
7 has believed
8 have , lived
9 hasn't visited
1 read( 注:过去时与原形相同
2 Have , finished
3 has played
4 haven't finished
5 have worked
6 didn't do
7 has believed
8 have , lived
9 hasn't visited