用現在完成時時做否定句，用現在完成時做肯定句和否定句 疑問句的結構是什麼？

現在進行時：

肯定：他's climbing a tree.

疑問句：他在爬樹嗎？

否定句：他不是't climbing a tree.

簡單過去時：

肯定句：他爬了一棵樹

疑問句：他爬樹了嗎？

否定句：他沒有't climb a tree.

將來時：肯定句：he's going to climb a tree.

疑問句：他要爬樹嗎？

否定句：他不是't going to climb a tree.

現在完成時態：

肯定：他's climbed a tree.

疑問句：他爬過樹嗎？

否定句：他有't climbed a tree.

現在完成時是過去的動作或狀態，一直持續到現在，對現在的影響可能會繼續發生。 在英語時態中，“時”是指動作發生的時間，“狀態”是指動作的出現和狀態。

用現在完成時1.過去發生的行動對現在的影響。

2. 過去的行動或狀態一直持續到現在，並且已經完成或可能繼續。

3.現在完成時表示將來。

肯定句：

1、she came to help us in those days.在那些日子裡，她來幫助我們。

2、i was late yesterday.昨天我遲到了。

3、when you called me.當你打電話給我時，我正在上網。

4、i had a good holiday last year.去年我度過了乙個愉快的假期。

5、they were here only a few minutes ago.幾分鐘前他們還在這裡。

否定句：

1、i didn't know you like coffee.我不知道你喜歡咖啡。

2、we weren't late yesterday.我們昨天沒有遲到。

3、i was not on the internet when you called me .你給我打電話時我不線上。

4、they weren't able to come because they were so busy.他們不能來，因為他們太忙了。

5、i didn't know you were here.我不知道你在這裡。

疑問句：

1、did you do homework?你做功課了嗎？

3、did mr li look very old?李先生看起來老了嗎？

4、could he pack his things himself?他能自己打包嗎？

5、when did they give the concert?他們什麼時候舉行**會議？

肯定否定：

i was stayed at home yesterday.已更改為 WASN't ,you were a student ten years ago.被改為 WEREN't

we played at playground last week.打前場沒有' t 。玩變成了玩

i cleaned my room last night.Clean Plus 沒有在它前面't 。清潔變得乾淨

問：你昨天呆在家裡嗎？

were you a student ten years ago?

did you play at playground last week?

did you clean your room last night?

看在我打字的份上，給我乙個獎勵。