1、Tom (swim) in the river now.
2、Why (be) they not here yesterday?
3、Yesterday afternoon they (play) football with their English teacher.
4、It’s eight o’clock now. The boys (watch) TV.
5、She usually (do) her homework in the evening.
6、Tom and Tony can’t (swim).
7、What does your father ______ (do)? He’s a worker.
8、Look! Jim and Tom (run) there.
四、写出下列动词的过去式。
方法：
1、在动词后直接加ed. 如：clean—2、以e结尾的动词，在动词后直接加d. 如：use—3、以辅音字母+y结尾的动词，把y改成i, 再加ed.
如：4、有很个别是要双写最后一个字母再加ed的。 如：shop—shopped
5、特殊的有：
am—was, is—was, are—were, do—did, does—did 等。
Model: clean