4.2【核心句式】-2021-2022学年八年级英语下册链接教材精准变式练（人教版）

Unit 4 Why don't you talk to your parents？ ( 教材 核心句式 知识链接 及典例解读 ) “Why don't you...?”句型 【教材原句】Why don't you go to sleep earlier this evening?你为什么今晚不早点睡觉呢？ 【句式结构】“Why don't you +动词原形（＋其他）？”句型表示提建议，意为“你为什么不······呢？” 相当于“Why not+动词原形（＋其他）？” Why don't you take off your coat? =Why not take off your coat?你为什么不脱掉你的外套呢？ 【联想拓展】提建议的其他常用表达： ①“What/How about(doing)sth.?”意为“（做）某事怎么样／好吗？” What/How about talking to your parents?和你的父母谈一谈怎么样？ ②“Let's do sth.”意为“咱们做某事吧。” Let's go to the park after breakfast.咱们早饭后去公园吧。 ③“You should(not) do sth.”意为“你（不）应该做某事。” You should do your homework first.你应该先做你的家庭作业。 ④“You'd better(not) do sth.”意为“你最好（不）做某事。” You'd better not go out at night.你晚上最好不要出门。 ⑤“Would you like sth./to do sth.?”意为“你想要某物／做某事吗？” Would you like to have a try?你想试试吗？ 典例 It is raining outside.Why not an umbrella? A.to take B.take C.taking 【解析】根据“Why not+动词原形（＋其他）？”句型可知选take.故选B项。 【答案】B 一、单项选择 1．—Why ________ talk to your parents? —Because I am afraid they will be angry with me. A．don’t B．do you C．not D．can’t 2．Why not _______ a walk in the park with us? A．taking B．to take C．take D．takes 3．Why not ________ your teacher for help when you can’t finish________the homework by yourself ? A．to ask; do B．to ask; doing C．ask; doing D．asking; to do 4．— Why don’t we go to the Shanghai Science and Technology Museum? — ________ , but there’re too many visitors at weekends. Let’s make it next Monday. A．Good idea B．Enjoy yourselves C．That’s all right D．I don’t think so 5．—It’s a long time since I saw my brother. —Why ________ him this weekend? A．not to visit B．don’t visit C．not visit 6．—Why not play baseball with us on Saturday afternoon? —________. I plan to do it, too. A．That’s the main thing B．I’m afraid no C．That’s a great idea D．It doesn’t matter 7．—Why not go hiking and relax after this test? —________. A．Have a good time B．You are welcome C．Sounds cool D．That’s a pity 8．Why not ________ to the theater with me? A．going B．to go C．go 9．―Why don’t