英语语法中的一般过去时态，可以分为两类，一类是实意动词的一般过去时态，第二个的be动词的一般过去时态。这两种时代态最好分开来讲，有利于大家消化和吸收。
在学习语法时最好的办法是学习者参与其中，通过两种时态的对比来学习新的语法点，效果会更好，因为学员通过自己动手和动脑获取的知识会理解更深刻。
今天学习be动词的过去时，仍旧采用学员参与和2种时态的对比来学习。
yesterday昨天
just now刚才
last year 去年
two weeks ago两周前
last week上周
two years ago2年前
after school 放学以后
after work下班以后
观察和对比来个时态形式有何不同
1. I amtired, (now) I was tired last night.
2. Where isKet? (now) Where was Ket yesterday?
3. The weather isgood today. The weather was good last week.
4. You arelate, (now) You were late yesterday.
5. They aren’there, (now) They weren’t here last Sunday
通过对比，总结一下一般过去时的特点和结构
6. We arein the library. ( yesterday) (用括号里的时间状语将下列句子改为一般过去时。)
We werein the library yesterday.
7. My parents aren"tin the office. (last Sundy) (用括号里的时间状语将下列句子改为一般过去时。)
My parents weren"tin the office last Sunday.
8. She isin the shop. (last Monday) (用括号里的时间状语将下列句子改为一般过去时。)
She wasin the shop last Monday.
9. The children arein the zoo. (yesterday) (用括号里的时间状语将下列句子改为一般过去时。)
The children werein the zoo yesterday.
用be动词的正确形式填空，注意时间是过去还是现在
10. Last year she ............. 22, so sh e............. 23 now.
11. Today the weather...................nice, but yesterday it .............very cold.
12. I ...................hungry. Can I have something to eat?
13. I feel fine this morning, but I ................ very tired last night.
14. Where ................you at 11 o ’clock last Friday morning?
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