is过去式是什么,以及如何使用?

什么是is过去式?

Is过去式是动词"to be"的过去式,通常用于表示过去的某一状态或存在。

is过去式

如何使用is过去式?

1. 与单数第三人称主语(he、she、it)一起使用,例如:

- He was tall. (他很高。)

- She was happy. (她很快乐。)

- It was raining. (一直在下雨。)

2. 与there一起使用,以表示存在或不存在,例如:

- There were many people at the party. (派对上人很多。)

- There wasn't a cloud in the sky. (天空中没有一丝云彩。)

什么时候使用is过去式?

Is过去式用于表示以下情况:

1. 过去的某个状态或存在,例如:

- The weather was nice yesterday. (昨天的天气很好。)

- I was at the park this morning. (我今天早上在公园。)

2. 过去一段时间内的习惯性活动,例如:

- He was always late for appointments. (他总是迟到。)

- She was a great cook. (她是一个出色的厨师。)

拓展段落:其他be动词的过去式

除了"is"之外,"be"动词的其他形式也有过去式:

are过去式:were

was过去式:was

were过去式:were

am not过去式:wasn't

are not过去式:weren't

was not过去式:wasn't

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