名师指导：Unit5__重点诠释.docVIP

名师指导：Unit5 重点诠释 一、 [话题](Topic) Invitations 二、 [重点词组](Key Phrases) 1. Have a piano lesson2. Have math 3. Have a test 4. Study for a test 5. What a small party! 6. On Saturday 7. Too bad! 8. Too many 9. Too old 10. I can’t either. 11. I can too. 12. Next time 13. Anther time 14. Thanks for asking 15. Say no to +N… 16. Say yes to + N… 17. Invite sb to do…=ask sb to do sth… 三、 [交际用语] 1. Can you come to my party? 你能来我的聚会吗？ Sure, I’d love to. 当然，我很愿意。 2. Can you go to the movies? I’m sorry. I have to help my mom. 你能去看电影吗？对不起，我必须帮我妈妈。 3. Can she go to the baseball game? No, she can’t. She has to study for a test. 她能去棒球赛吗？不能，她不得不为考试学习。 4. Can they go to the concert? No, they can’t. They’re going to a party. 他们能去音乐会吗？不能，他们将去（参加）聚会。 四、 [重点难点释义] (Language Points) 1. 情态动词“have to”与其他的情态动词如：“can” , “may” “must”和 “should”（应该）不同。 （1）这4个情态动词没有人称的变化。 而have to有。它的第三人称单数为“has to” 如：He should study hard .他应该好好学习。 He has to study hard .他不得不好好学习。 （2）这4个情态动词在一般疑问句中将它们提前大写，在否定句中直接在他们后边加not即可。 我们以can为例。 Can he go with us ?他能和我们一起去吗？ He can’t go with us . 他不能和我们一起去。 而“have to”要加助动词do , does或did才可能完成其疑问、否定句。 同学们试着将下面三种话分别写成（1）一般疑问句，并做肯定回答。（2）否定句。 A: They have to go to the party. Do they have to go to the party? Yes, they do. They don’t have to go to the party. B: He has to go to see the doctor. Answers: Does he have to go to see the doctor? Yes, he does. He doesn’t have to go to see the doctor. C. She had to have a piano lesson yesterday. Answers: Did she have to have a piano lesson yesterday? Yes, she did. She didn’t have to have a piano lesson yesterday. （用了助动词 “does”或 “did”表示疑问，否定时一定注意原来动词的第三人称单数或过去式要还原）。 2. I have to help my parents 我不得不帮助我的父母。 如果说我不得不帮助我父母干家务怎么说呢？ 关于help我们已经讲过它的用法 help sb with sth 或help sb (to) do sth . 上一句我们可以说： I have to help my parents with the hous