Unit 3 Section A(Grammar Focus～4c)-【四清导航•河南专版】2022-2023学年八年级英语下册作业课件(人教版)

第三课时　Section A(Grammar Focus4c) ——单元语法精讲精练 英语 八年级下册 人教版 四清导航 情态动词could的用法 ►表示过去的能力和可能性。 could为can的过去式，表示过去的能力和可能性时，其肯定回答和否定回答都用could。 —Could you play basketball when you were 8 years old？你八岁时会打篮球吗？ —Yes，I could./No，I couldn't.是的，我会。/不，我不会。 ►could可用于表示请求的问句中，其表现形式有两种。 1．Could you (please)...？表示请求对方做某事。 Could you please help me clean the room？你能帮我打扫房间吗？ 2 2．Could I．..？表示请求对方允许自己做某事。 Could I use your bike？我可以用你的自行车吗？ 【注意】表示请求时，其肯定回答和否定回答都不用could，肯定回答常用“Certainly./Of course./Yes，sure./It's OK./All right.”等；否定回答常用“Sorry，but.../Of course not.”等。 —Could you please do the dishes？你可以洗盘子吗？ —Sorry，I'm afraid not.I have to do my homework.对不起，恐怕不行。我得做家庭作业。 —Could I use your computer？我可以用你的电脑吗？ —Certainly.当然可以。 一、根据语境完成下列各题。 1．—Could Mike and I go climbing this weekend，Dad? — ____，_____．But be careful. 2．—Mom，could I go out tonight? — __________，____ ______．You will have an exam tomorrow. 3．—Could you come to my house after school? — _________，__ _____．I must practice the piano tonight. 4．—Could I have one of these apples，Dad? — ___ ______/ ___ ________．But you must wash your hands before you eat it. 语法精练 Yes sure Sorry / No you can't Sorry/No I can't Of course No problem 4 二、根据汉语意思完成下列句子。 5．我刚刚割伤了我的手指。请你给它打上绷带好吗？ I cut my finger just now. ______ ____ ______ ____ a bandage on it? 6．——当你四岁时，你会唱英语歌吗？ ——不，我不会。 — ______ ____ _____ English songs when you were four years old? — ____，__ ________． 7．——妈妈，今晚我能和朋友们一起去看电影吗？ ——好的，可以。 —Mom，_____ __ ___ to the movies with my friends tonight? — ____，_____． Could you please put Could you sing No I couldn't could I go Yes sure 8．——你能告诉我一个吃饭的好地方吗？ ——当然可以。附近有一个。 — ______ ____ tell me a good place to eat? — ___ _______．There is one nearby. 9．——你能帮我搬一下那个重箱子吗？ ——没问题。我足够强壮。 —Could you please carry that heavy box for me? — ____ ________．I'm strong enough. Could you Of course No problem 6 一、用方框中所给单词的适当形式填空。 1．Mike _____ to do the dishes because he thinks it's boring. 2．David _________ my new CD yesterday and he didn't give it ba