Question

过去进行时的结构和用法是什么？

Answer 1

1. 过去进行时由“主语+was/were + doing”构成

eg： We were having supper when the phone rang. 我们正在吃晚饭时电话响了。

2. 过去进行时的否定式由“主语+was/were not +doing”构成

eg： This time yesterday Jack was not watching TV. He was repairing his bike. 昨天这个时候，杰克不是在看电视，而是在修理自行车。

3. 过去进行时的疑问式由“was/were +主语+doing”组成

eg： Were you playing basketball at four yesterday afternoon? 昨天下午四点你们在打篮球吗？

变化规则

现在分词

1. 在动词原形后直接加-ing

look-looking cook-cooking read-reading

2. 以不发音字母e结尾的动词 ，去掉e再加-ing

write-writing live-living

3. 以重读闭音节结尾且末尾只有一个辅音字母的动词，双写该辅音字母后再加-ing

begin-beginning swim-swimming sit-sitting

4. 少数几个以ie结尾的动词，要变ie为y，再加-ing

tie-tying die-dying lie-lying