Unit8语法专练-2025-2026学年仁爱科普版八年级英语下册

仁爱版八下第8单元语法专练 名词后缀 -ion 与条件状语从句 if 第一部分:关于后缀 -ion 在英语里,很多动词加上 -ion 会变成名词,意思通常是“该动作的过程、结果或状态”。 常见的几种变化形式 1. -tion (最常见的形式) act (行动) action (动作、行动) attract (吸引) attraction (吸引人的事物、景点) collect (收集) collection (收藏品) inform (通知) information (信息) 2. -sion decide (决定) decision (决定) discuss (讨论) discussion (讨论) express (表达) expression (表情、词语) admit (承认) admission (入场费、承认) 3. -ation (常见于 -ize 或 -y 结尾的动词) organize (组织) organization (组织、机构) imagine (想象) imagination (想象力) invite (邀请) invitation (邀请) 4. -ition compete (竞争) competition (比赛、竞争) add (添加) addition (添加物、加法) 练习:后缀 -ion 1. 填空:把括号里的动词变成合适的名词 1. 她的英语 _ (pronounce)进步了很多。 2. 我们对假期计划进行了一次热烈的 _ (discuss)。 3. 谢谢你发来的 _ (invite),我很乐意去。 4. 小孩子通常有丰富的 _ (imagine)。 5. 这个新 _ (invent)能给生活带来很多便利。 6. 你得尽快做个 _ (decide)。 7. 能不能给我一个合理的 _ (explain)? 8. 关于这次旅行,我需要更多 _ (inform)。 9. 他脸上困惑的 _ (express)把大家都逗笑了。 10. 这是我的个人 _ (suggest),你可以参考一下。 2. 选词填空 | attention | competition | protection | collection | reaction | 1. 集邮 (stamp _) 是个挺有意思的爱好。 2. 上课时你应该多集中 _。 3. 这场 _ 很激烈,很多人报名参加了。 4. 涂防晒霜能给皮肤提供 _。 5. 听到这个消息,她的第一 _ 是什么? 第二部分:条件状语从句 (if ...) 基本用法 说“如果……(就)……”时,英语里通常遵循一个简单的原则:主将从现。 意思是:主句如果用了将来时 (will),if 从句里要用一般现在时。 If it rains tomorrow, we will stay at home. (如果明天下雨,我们就待在家里。) 其他常见情况 1. 主句有情态动词 (can, may, must 等),从句也用一般现在时。 If you finish your work, you can go out. (做完活你就可以出去。) 2. 主句是祈使句 (表示请求或命令),从句也用一般现在时。 If you are tired, take a break. (累了就歇会儿。) 注意 if 从句的位置 放在句首时,后面通常加逗号:If you see him, please tell me. 放在句中时,不用逗号:Please tell me if you see him. 练习:条件状语从句 (if) 1. 选择正确的答案 1. 如果明天下雨,我们就取消野餐。 If it _ (A. rain B. rains C. will rain) tomorrow, we'll cancel the picnic. 2. 要是你现在不起来,上学就得迟到。 You'll be late if you _ (A. don't B. won't C. aren't) get up now. 3. 这周末要是有空,我就去看我爷爷奶奶。 If I _ (A. am B. will be C. be) free this weekend, I'll visit my grandparents. 4. 需要帮忙就给我打电话。 Please call me if you _ (A. need B. will need C. are need) any help. 5. 她要真努力了,考试就能过。 If she _ (A. study B. studies C. will study) hard, she will pass the exam. 6. 红灯的时候别过马路。 Don't cross the street if the light _ (A. is B. will be C. be) red. 2. 用动词的正确形式填空 1. 如果他准时到,咱们就开会。 If he _ (arrive) on time, we'll start the meeting. 2. 不带伞你会淋湿的。 You _ (get) wet if you don't take an umbrella. 3. 他们再不快点就赶不上车了。 If they _ (not hurry), they'll miss the bus. 4. 见到朋友她会很高兴的。 She will be happy if she _ (see) her friends. 5. 要是他回来了,让他给我打个电话。 Please tell him to call me if he _ (come) back. 3. 把两句话合并成 if 条件句 1. 你会身体健康。你每天锻炼。 _ 2. 我去逛街。明天天气好。 _ 3. 她可能会迟到。她会打电话给我们的。 _ 第三部分:综合练习 (把两个知识点放一起) 1. 填空:注意括号里有时是动词变名词,有时是 if 从句的时态 1. 如果你赢了比赛,这将是他这辈子最大的成就。 If he _ (win) the competition, it'll be the greatest _ (achieve) of his life. 2. 如果你决定了,就给我个准信儿。 Please give me a definite _ (decide) if you _ (make) up your mind. 3. 会议要是正常开,会有一场关于环保的严肃讨论。 There will be a serious _ (discuss) about environmental _ (protect) if the meeting _ (go) ahead. 4. 发音不注意,别人可能听不懂你在说什么。 If you don't pay enough _ (attend) to your _ (pronounce), people may misunderstand you. 5. 这个新发明要是真的好用,能省不少电。 If this new _ (invent) _ (work) well, it'll save a lot of energy. 6. 你的解释不够清楚,再讲一遍我们可能就明白了。 Your _ (explain) is not clear enough. If you _ (re-explain) it, we will understand better. 7. 观众要是没反应,我就尴尬了。 If there is no immediate _ (react) from the audience, I will feel embarrassed. 8. 多读书能提高你的表达能力。读得多了,写东西自然就好。 Reading more is a good way to improve your _ (express) skills. If you read more, your writing will improve. 9. 医生建议,要是再疼就直接来找他。 The doctor's _ (suggest) is that if it _ (hurt) again, you should see him immediately. 2. 翻来覆去弄明白 (句子改错) 1. If you will be free tomorrow, we will have a discuss about the plan. (这里有俩问题:if 从句的时态和 discuss 的词性) _ 2. Your pronunciation will get better if you will practice more. _ 3. If you make a good impress on them, you'll get the job. _ 4. If there is no solve to this problem, we'll be in trouble. _ 3. 翻译 (试试自己说两句) 1. 你要是有什么好建议,尽管告诉我们。 2. 他要是真有创意,这问题难不倒他。 3. 需要更多信息的话,给我打电话就行。 4. 没有你们的帮助,我不可能做成的。 (提示:后半句可以用 I wouldn't have succeeded。或者用 if 来说:If it weren't for your help...) 参考答案 第一部分:后缀 -ion 填空 1. pronunciation 2. discussion 3. invitation 4. imagination 5. invention 6. decision 7. explanation 8. information 9. expression 10. suggestion 选词填空 1. collection 2. attention 3. competition 4. protection 5. reaction 第二部分:条件状语从句 选择 1. B (rains) 2. A (don't) 3. A (am) 4. A (need) 5. B (studies) 6. A (is) 填空 1. arrives 2. will get 3. don't hurry 4. sees 5. comes 合并句子 1. If you exercise every day, you will be healthy. / You'll be healthy if you exercise daily. 2. I'll go shopping if the weather is fine tomorrow. / If the weather's fine tomorrow, I'll go shopping. 3. If she's late, she'll call us. / She'll call us if she's late. 第三部分:综合练习 填空 1. wins, achievement 2. decision, have made / make 3. discussion, protection, goes 4. attention, pronunciation 5. invention, works 6. explanation, re-explain 7. reaction 8. expression 9. suggestion, hurts 改错 1. If you are free tomorrow, we will have a discussion about the plan. 2. Your pronunciation will get better if you practice more. (去掉 will) 3. If you make a good impression on them, you'll get the job. 4. If there is no solution to this problem, we'll be in trouble. 翻译 (仅供参考) 1. If you have any good suggestions, just tell us. 2. If he really has creativity, this problem won't be difficult for him. 3. If you need more information, just give me a call. 4. I couldn't have done it without your help. / If it weren't for your help, I wouldn't have succeeded. 学科网(北京)股份有限公司 $