主动表被动need doing 等高频搭配-2025-2026学年八年级英语下册语法考点精讲（沪外版）

8下沪外版 【寒假专版】 B版考点精讲 寒假专版 主动表被动 (need doing等高频搭配) 语法专项突破 考点精讲 考点一：need doing结构表被动的基本用法 规则：当主语是物时，”need+动词-ing形式表示被动含义，意为”需要被”，此时主动形式 表达被动意义，相当于”need to be+过去分词'。 例题l:(选择，沪外版初中期末真题改编)：The broken windowrepairing.A.need B.needs C. is needing D.needed(答案：B) 例题2：（填空）：This bike is dirty and it_cleaning.(答案：needs) 考点二：want/require doing结构表被动的用法 规则：除need外，want和require也可用于”动词+动词-ing形式'结构表被动，用法与need doing 类似，同样表示”需要被”。 例题1： (选择)：Your hair is too long.It_cutting.A.wants B.want C.is wanting D.wanted(答 案：A) 例题2： (语法填空)：The problem_solving at once.(答案：requires) 考点三：主动表被动结构与不定式被动语态的转换 规则：”need/want/require+doing'可以与"need/want/require+tobe+过去分词”进行同义转换，表 达相同的被动含义。 例题I:(句型转换)：The old house needs repairing..(改为同义句)The old house needs (答案：to be repaired) 例题2： 考点四：主动表被动结构的否定形式 规则：”need/want/require doing'”的否定形式为'don't/doesn't/didn't+need/want/require+doing”,表 示”不需要被”。 例题1：（选择）：The room is clean.Itcleaning.A.doesn't need B.needn'tC.isn't need D.dont 1 8下沪外版 【寒假专版】B版考点精讲 need(答案：A) 例题2： 考点综合训练 一、单项选择 1.The old doorpainting.A.need B.needs C.is needing D.needed 2.Your watch is broken.It repairing.A.want B.wants C.is wanting D.wanted 3.The difficult questionsolving immediately.A.require B.requires C.is requiring D.required 4.The clean room_cleaning now.A.doesn't need B.needn't C.isn't need D.don't need 5.These dirty clotheswashing.A.need B.needs C.needed D.is needing 6.The small gardenwatering every day.A.want B.wants C.wanted D.is wanting 二、语法填空 1.The broken chair(need)fixing 2.Her hair is too long and it(want)cutting. 3.The old machine(require)repairing soon. 4.The bright room(not need)cleaning. 5.This pair of shoes(need)washing. 6.The math problem_(require)solving carefully. 三、句型转换 l.The broken bike needs repairing.(改为同义句) The broken bike needs_ 2.These old books require reading.(改为同义句) These old books require_ 3.The dirty window wants cleaning.(改为否定句) The dirty window_cleaning. 4.My old phone needs repairing.(改为否定句) My old phone repairing. 2 8下沪外版 【寒假专版】 B版考点精讲 5.The empty bottle requires recycling.(改为同义句) The empty bottle requires 四、篇章填空 My grandparents live in an old house.The roof of the house 1.-(need)repairing because it leaks when it rains.The wooden door 2.-(want)painting too,as the color is fading.My father says the house 3. -(require)cleaning before they move back.However,the living room is still tidy,so it 4.-(not need) cleaning right now.The garden outside 5.-(need)watering every moming,and the broken fence 6. (require)fixing soon.I hope we can help them make the house beautiful again! 参考答案 一、单项选择 1.B2.B3.B4.A5.A6.B 二、语法填空 1.needs 2.wants 3.requires 4.doesn't need 5.needs 6.requires 三、句型转换 1.to be repaired 2.to be read 3.doesn't want 4.doesn't need 5.to be recycled 四、篇章填空 1.needs 2.wants 3.requires 4.doesn't need 5.needs 6.requires 3