Unit4语法讲解及习题_ 连词unless, as soon as, so…that2025-2026学年鲁教版(五四学制）英语八年级上册

鲁教（五四学制）英语八上Unit4语法讲解及习题 连词unless, as soon as, so…that 一、连词 unless, as soon as, so…that 用法 （一）unless 的用法 1. 核心含义：除非；如果不（= if…not） 2. 引导从句：条件状语从句 3. 时态规则： 主句用将来时/情态动词/祈使句，从句用一般现在时表将来。 例：He will not go to the party unless he is invited. = He will not go to the party if he is not invited. 4. 例句： You can’t turn yourself into a person unless you can hide your tail. Unless you work hard, you won’t pass the exam. （二）as soon as 的用法 1. 核心含义：一……就…… 2. 引导从句：时间状语从句 3. 时态规则： 主句用将来时/情态动词/祈使句，从句用一般现在时表将来。 例：I will call you as soon as I get home. 若描述过去的事，主从句都用一般过去时。 例：As soon as the man finished talking, Yu Gong said that his family could continue. 4. 例句： As soon as I see bad people, I think of ways to fight them. He will help you as soon as he finishes his work. （三）so…that 的用法 1. 核心含义：如此……以至于…… 2. 引导从句：结果状语从句 3. 结构： so + 形容词/副词 + that + 从句 so + 形容词 + a/an + 可数名词单数 + that + 从句 so + many/much/few/little + 名词 + that + 从句 4. 例句： The mountains were so big that it took a long time to walk to the other side. She was so busy that she had no time to make a dress. The new couple were so happy that they couldn’t stop smiling. （四）三个连词对比表 连词 含义 从句类型 核心逻辑 例句 unless 除非；如果不 条件状语从句 否定条件 You can’t go unless you finish your homework. as soon as 一……就…… 时间状语从句 时间先后 I’ll call you as soon as I arrive. so…that 如此……以至于…… 结果状语从句 程度与结果 He was so tired that he fell asleep immediately. 二、专项练习题 Ⅰ. 单项选择 (15题) 1. You can’t turn yourself into a person __________ you can hide your tail. A. unless B. as soon as C. so…that D. if 2. __________ the man finished talking, Yu Gong said that his family could continue to move the mountains. A. Unless B. As soon as C. So…that D. If 3. The mountains were __________ big __________ it took a long time to walk to the other side. A. so; that B. too; to C. such; that D. enough; to 4. She was __________ busy __________ she had no time to make a dress for the party. A. so; that B. too; to C. such; that D. enough; to 5. The mice knew that __________ they helped her make a dress, she would not be able to go to the party. A. unless B. as soon as C. so…that D. if 6. __________ the prince saw her, he fell in love with her. A. Unless B. As soon as C. So…that D. If 7. The prince knew that __________ the girl’s foot could fit the shoe, it was not the right girl. A. unless B. as soon as C. so…that D. if 8. The new couple were __________ happy __________ they couldn’t stop smiling when they got married. A. so; that B. too; to C. such; that D. enough; to 9. He will not go to the park __________ it rains tomorrow. A. unless B. as soon as C. so…that D. if 10. I will call you __________ I get home. A. unless B. as soon as C. so…that D. if 11. He was __________ tired __________ he fell asleep immediately. A. so; that B. too; to C. such; that D. enough; to 12. You won’t pass the exam __________ you work hard. A. unless B. as soon as C. so…that D. if 13. __________ I see bad people, I think of ways to fight them. A. Unless B. As soon as C. So…that D. If 14. The story was __________ interesting __________ all the children liked it. A. so; that B. too; to C. such; that D. enough; to 15. He will help you __________ he finishes his work. A. unless B. as soon as C. so…that D. if Ⅱ. 句型转换 (10题) 16. You can’t go out if you don’t finish your homework. (改为同义句) You can’t go out __________ you finish your homework. 17. I will help you when I finish my work. (改为同义句) I will help you __________ __________ __________ I finish my work. 18. The box is so heavy that I can’t carry it. (改为同义句) The box is __________ heavy __________ me to carry. 19. He was so young that he couldn’t go to school. (改为同义句) He was __________ young __________ go to school. 20. If you don’t study hard, you won’t get good grades. (改为同义句) __________ you study hard, you won’t get good grades. 21. I will go to the park when it stops raining. (改为同义句) I will go to the park __________ __________ __________ it stops raining. 22. The movie is so interesting that all of us want to see it again. (改为同义句) It is __________ an interesting movie __________ all of us want to see it again. 23. He can’t go to the party if he doesn’t finish his homework. (改为同义句) He can’t go to the party __________ he finishes his homework. 24. I will call you when I arrive in Beijing. (改为同义句) I will call you __________ __________ __________ I arrive in Beijing. 25. The boy is so short that he can’t reach the apples on the tree. (改为同义句) The boy is __________ short __________ reach the apples on the tree. Ⅲ. 用所给连词填空 (5题) 用 unless, as soon as, so…that 填空。 26. __________ you work hard, you won’t get good grades. 27. I will go to the park __________ it stops raining. 28. The mountains were __________ big __________ it took a long time to walk to the other side. 29. She was __________ busy __________ she had no time to make a dress for the party. 30. The mice knew that __________ they helped her make a dress, she would not be able to go to the party. Ⅳ. 用所给词的适当形式填空 (5题) 31. As soon as the man __________ (finish) talking, Yu Gong __________ (say) that his family could continue to move the mountains. 32. The Monkey King __________ (help) weak people. He __________ (have) a magic stick. 33. He can __________ (make) the stick big or small. He can sometimes __________ (make) the stick so small that he can put it in his ear. 34. As soon as he __________ (see) bad people, he __________ (think) of ways to fight them. 35. He can __________ (turn) himself into different animals and objects. But unless he can hide his tail, he cannot __________ (make) himself a human. 三、答案与解析 Ⅰ. 单项选择 (15题) 1. A. unless 解析：unless 表示“除非”，符合“除非能藏起尾巴，否则不能变成人”的语境。 2. B. As soon as 解析：as soon as 表示“一……就……”，符合“那人一说完，愚公就说……”的语境。 3. A. so; that 解析：so…that 表示“如此……以至于……”，符合“山如此大，以至于走到另一边要花很长时间”的语境。 4. A. so; that 解析：so…that 表示“如此……以至于……”，符合“她如此忙，以至于没有时间做裙子”的语境。 5. A. unless 解析：unless 表示“除非”，符合“除非老鼠帮她做裙子，否则她不能去派对”的语境。 6. B. As soon as 解析：as soon as 表示“一……就……”，符合“王子一看到她，就爱上了她”的语境。 7. A. unless 解析：unless 表示“除非”，符合“除非女孩的脚能穿上鞋子，否则就不是那个女孩”的语境。 8. A. so; that 解析：so…that 表示“如此……以至于……”，符合“新婚夫妇如此开心，以至于结婚时笑个不停”的语境。 9. A. unless 解析：unless 表示“除非”，符合“除非明天下雨，否则他不会去公园”的语境。 10. B. as soon as 解析：as soon as 表示“一……就……”，符合“我一到家就给你打电话”的语境。 11. A. so; that 解析：so…that 表示“如此……以至于……”，符合“他如此累，以至于立刻睡着了”的语境。 12. A. unless 解析：unless 表示“除非”，符合“除非你努力学习，否则你不会通过考试”的语境。 13. B. as soon as 解析：as soon as 表示“一……就……”，符合“我一看到坏人，就想办法对付他们”的语境。 14. A. so; that 解析：so…that 表示“如此……以至于……”，符合“故事如此有趣，以至于所有孩子都喜欢它”的语境。 15. B. as soon as 解析：as soon as 表示“一……就……”，符合“他一完成工作就会帮你”的语境。 Ⅱ. 句型转换 (10题) 16. unless 解析：if…not 与 unless 同义，意为“除非”。 17. as soon as 解析：when 与 as soon as 在此处均可表示“一……就……”。 18. too; for 解析：so…that… 可与 too…for sb. to… 互换，表示“太……而不能……”。 19. too; to 解析：so…that… 可与 too…to… 互换，表示“太……而不能……”。 20. Unless 解析：if…not 与 unless 同义，意为“除非”。 21. as soon as 解析：when 与 as soon as 在此处均可表示“一……就……”。 22. such; that 解析：so + 形容词 + that… 可与 such + a/an + 形容词 + 名词 + that… 互换。 23. unless 解析：if…not 与 unless 同义，意为“除非”。 24. as soon as 解析：when 与 as soon as 在此处均可表示“一……就……”。 25. too; to 解析：so…that… 可与 too…to… 互换，表示“太……而不能……”。 Ⅲ. 用所给连词填空 (5题) 26. Unless 27. as soon as 28. so; that 29. so; that 30. unless Ⅳ. 用所给词的适当形式填空 (5题) 31. finished; said（描述过去的事，用一般过去时） 32. helps; has（描述客观事实，用一般现在时，主语为第三人称单数） 33. make; make（情态动词 can 后接动词原形） 34. sees; thinks（描述客观事实，用一般现在时，主语为第三人称单数） 35. turn; make（情态动词 can 后接动词原形） ( 1 ) 学科网（北京）股份有限公司 $