外研版（2024）七年级下册重点语法归纳（含答案）

外研版七年级下册 Unit 4-6 重点语法归纳 Unit 4 The art of having fun 四、祈使句 考点1 祈使句的定义与功能 祈使句用来表达叮嘱、劝告、希望、禁止、请求或命令等。通常省略主语 you（你/你们）。 例如： Give them more personal space. 多给他们点个人空间。（建议/劝告） Wave to say goodbye. 挥手说再见。（指令） Be careful! 小心！（警告） 考点2 祈使句的结构特征 以动词原形开头： 句子一般没有主语，谓语动词用原形，无时态和数的变化。 肯定形式： 1. 实义动词原形 + 其他。 例如：Come to my office. 到我办公室来。 2. Be动词原形 + 形容词/名词 + 其他。 例如：Be happy. 高兴点。 否定形式： 在动词原形前加 Don't。 例如：Don't stand too close to the river bank. 不要站得离河边太近。 Don't be late again. 不要再迟到了。 【注意】 虽然 do 及其否定形式 don't 一般不能作助动词与 be 连用（如陈述句中不说 He don't be...），但在祈使句中，Don't be... 是正确的否定表达。 例如：Don't be shy. 别害羞。 考点3 祈使句的语气表达 表达请求： 常在句首或句末加 please，使语气更委婉客气。若 please 加在句末，通常用逗号隔开。 例如：Please close the door. / Sit down, please. 表达强烈语气： 句末可使用感叹号。 例如：Stop! 停！ Hurry up! 快点！ Unit 4 过关斩将 一、单项选择 1. _____ run in the hallways. It's dangerous. A. Please B. Don't C. Not D. Doesn't 2. _____ quiet, please! The baby is sleeping. A. Is B. Are C. To be D. Be 3. _____ me the book, please. I want to read it. A. Give B. Giving C. Gives D. To give 4. Let's _____ football together after school. A. playing B. plays C. play D. to play 5. _____ bring food into the library. It's against the rules. A. No B. Not C. Don't D. Can't 二、用所给词的适当形式填空 6. _____ (not forget) to close the window when you leave. 7. Please _____ (listen) to the teacher carefully in class. 8. _____ (be) careful! The water is very hot. 9. Let him _____ (do) his homework by himself. 三、短文填空（每空填一词） Hello, everyone! Welcome to our school library. Here are some rules for you. First, please 10._____ quiet in the library. Don't 11._____ loudly. Second, take good care of the books. 12._____ draw or write on them. Third, remember to return the books on time. If you lose a book, you must 13._____ for it. Also, don't bring any food or drinks 14._____ the reading room. Keep the library clean. If you have any questions, please 15._____ the librarian for help. 16._____ enjoy your reading here. Reading 17._____ make you smart and happy. Let's 18._____ a good reader from now on. 【参考答案】 一、1-5 BDACC 二、6. Don't forget 7. listen 8. Be 9. do 三、10. be / keep 11. talk / speak 12. Don't 13. pay 14. into 15. ask 16. Please / Just 17. can / will 18. be / become Unit 5 Amazing nature 五、形容词、副词的比较级和最高级 考点1 比较级和最高级的构成规则 1. 规则变化： 单音节和少数双音节词： 一般在词尾加 -er (比较级) / -est (最高级)。 如：tall → taller → tallest 以字母 e 结尾的，直接加 -r / -st。 如：nice → nicer → nicest 重读闭音节且末尾只有一个辅音字母，双写该字母，再加 -er / -est。 如：big → bigger → biggest; hot → hotter → hottest 以“辅音字母 + y”结尾，变 y 为 i，再加 ... ...