一般过去时中,实意动词有两种形式:原形和过去式。原形在肯定句中直接使用,否定句和疑问句中需要助动词did。过去式在肯定句中直接使用,否定句和疑问句中需要助动词did。规律动词的过去式通过在原形后加-ed构成,不规律动词的过去式需要记忆。
动词的原形
在肯定句中,实意动词的原形直接用于一般过去时中。例如:
- I played basketball yesterday. (我昨天打篮球了。)
- She sang a song at the party. (她在聚会上唱了一首歌。)
在否定句和疑问句中,实意动词的原形需要借助于助动词did。例如:
- I did not play basketball yesterday. (我昨天没有打篮球。)
- Did she sing a song at the party? (她在聚会上唱了一首歌吗?)
需要注意的是,动词的第三人称单数形式在一般过去时中也需要使用过去式,而不是原形。例如:
- He played basketball with us yesterday. (他昨天和我们一起打篮球。)
- She danced at the party last night. (她昨晚在聚会上跳舞。)
动词的过去式
实意动词的过去式是表示过去发生的动作或状态的一种特殊形式。它的构成方式有规律和不规律两种。
规律动词的过去式构成方法是在动词原形后加上-ed。例如:
- play -> played
- watch -> watched
- clean -> cleaned
不规律动词的过去式则没有规律可循,需要通过记忆才能掌握。例如:
- go -> went
- eat -> ate
- see -> saw
需要注意的是,动词的过去式在肯定句中直接使用即可。例如:
- I played basketball yesterday. (我昨天打篮球了。)
- She danced at the party last night. (她昨晚在聚会上跳舞。)
在否定句和疑问句中,实意动词的过去式同样需要借助于助动词did。例如:
- I did not play basketball yesterday. (我昨天没有打篮球。)
- Did she dance at the party last night? (她昨晚在聚会上跳舞了吗?)