2．Be动词在一般过去时中的变化：
⑴am 和is在一般过去时中变为was。（was not=wasn t） ⑵are在一般过去时中变为were。（were not=weren t） ⑶带有was或were的句子，其否定、疑问的变化和is, am, are一样，即否定句在was或were后加not，一般疑问句把was或were调到句首。 Were you born in July,1999? —Yes, I was./No,I wasn t. 3．句中没有be动词的一般过去时的句子(行为动词一般过去时态) 否定句：didn’t +动词原形，如：Jim didn t go home yesterday.
一般疑问句：在句首加did，句子中的动词过去式变回原形。 如：Did Jim go home yesterday? 特殊疑问句：⑴疑问词+did+主语+动词原形？ 如： ⑵疑问词当主语时：疑问词+动词过去式？ 如：Who went to home yesterday? 4.动词过去式变化规则： (1)．规则动词一般在动词末尾直接加-ed，如：(2)．结尾是e加d，如：taste-tasted move-moved (3)．末尾只有一个元音字母和一个辅音字母的重读闭音节，， 如：stop-stopped plan-planned (4)．以“辅音字母+y”结尾的，变y为i，再加-ed， (5)．不规则动词过去式： sweep-swept, swim-swam, sit-sat 5、其他用法 (1) (2)used to + 动词原型 He used to smoke. (3)would 表过去“经常” used to 与would do used to do 而 would doShe used to be a quiet child.(√) 就不能换为：7 Topic2
重点词组： 1. 7. fly a kite放风筝 2. 跳芭蕾舞 8. be good at / do well in doing擅长做… 3. to 9. have a good time /enjoy oneself 4. 玩得开心 5. 解出数学题 10. with one s help / with the help of 6. 在某人的帮助下 重点句型 11. Can/Could you dance? —Yes, I can/could. No, I can t/couldn t. 12. What can you do? —I can speak English. He can t sing English songs. 13. Do you want to sing Chinese songs or English songs? --Chinese songs. 14.一年前她根本不会做这件事。 15.他们一年前会做这件事，但是做得不是很好。 16. ut he couldn t do it 17. Michael can t come to school today because he hurt his right leg.
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