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今天资深英语都就给大家分享中考英语高频考点复习，九年级英语上册课时6 Unit 6（含练习及答案二），家长要为孩子收藏起来，对孩子学习英语会有很大的帮助哦！  课时6 Unit6 重点语法 (详见本书语法专题过关P110、121) 考点1 if 引导的条件状语从句(教材P84 Grammar) [知识精讲] if意为“如果”时，可引导条件状语从句： 1. 主句用一般将来时，条件状语从句用一般现在时。如： If we grow more bamboo, giant pandas will have more food. 如果我们种更多的竹子，大熊猫就会有更多的食物。 — If you see him, give him this note. 你要是见到他，就把这个便条给他。 — No problem. 没问题。 2. 条件状语从句的位置可在主句前，也可在主句后。如： If he goes, I won't go. ＝ I won't go if he goes. 如果他去，我就不去。 3. if还可以作“是否”讲，引导宾语从句。试比较： We'll visit the Great Wall if it doesn't rain tomorrow. 如果明天不下雨，我们将去游览长城。 I wonder if I should wear a coat or not. 我不知道该不该穿外套。 这里第一句中if意为“如果”，引导的是条件状语从句；第二句中if意为“是否”，引导的是宾语从句。whether也可用于引导宾语从句，大部分情况下可与if替换；但whether可与or not连用，而if不能。如： He asked whether/if you received the letter. 他问你是否收到了信。 考点精练1 1. — The students of Grade 9 have to take part in the P．E. test. — Yes. ________ you want to pass it and be stronger, practice more. A. Unless B. Until C. If D. After 2. — What did our teacher say just now? — He asked ________． A. whether we had any question B. if we needed any help or not C. what did we do D. that we could finish homework on time 3. ________ you like the idea or not, I am going to carry it out. A. WhetherB. May C. UnlessD. If 考点2 unless引导的条件状语从句(教材P85 Grammar) [知识精讲] unless相当于if ...not，意为“除非，如果不”，引导条件状语从句，从句的位置可以放在主句前，也可以放在主句后，但如果放在主句前要用逗号隔开。主句常用一般将来时，从句常用一般现在时。如： Unless you have a map, you'll get lost easily. ＝ You'll get lost easily unless you have a map. ＝ If you don't have a map, you'll get lost easily. 除非你有一张地图，否则你容易迷路。 考点精练2 4. (2019?镇江)— Is your WeChat account(账户) safe? — Yes, even my father can't use it ________ I tell him the password. A. when B. unless C. while D. if 5. (2019?扬州树人中学三模)— Could you give me some advice on travelling? — Take a map with you ________ you don't have a guide. A. if B. unless C. althoughD. because  声明： (责任编辑：admin) |