情态动词综合-2025-2026学年九年级英语全一册语法考点精讲（沪外版）

9年级沪外版 【寒假专版】 B版考点精讲 寒假专版 情态动词综合：推测、义务、建议等 语法专项突破 考点精讲 考点一：情态动词表推测的用法 规则：must表示“一定、肯定”，用于肯定句；may/might表示“可能、也许”，用于肯定句或否 定句；can't表示“不可能”，用于否定句 例题1：（选择，沪外版初中期末真题改编）：The light is on.He be at home.A.must B.mayC. can't D.needn't (答案：A) 例题2：（填空）：-Is this Lucy's pen?It_be hers.She doesn't have ared pen. (答案：can't) 考点二：情态动词表义务/责任的用法 规则：must表示“必须”，否定式nustn't表示“禁止”：have to表示“不得不”，强调客观需要 否定式don't have to表示“不必” 例题1：（选择）：You follow the traffic rules when crossing the road.A.canB.must C.mayD might(答案：B) 例题2：（填空）：It's raining heavily.We_stay at home today.. (答案：have to) 考点三：情态动词表建议/请求的用法 规则：should表示“应该”，提出建议；can/could表示“可以、能”，用于请求或许可，could语 气更委婉 例题1： (选择)：一_I borrow your dictionary?一Sure,here you are.A.MstB.Should C.Could D.Need (答案：C) 例题2： (填空)：You_eat more vegetables to keep healthy. (答案：should) 考点四：情态动词need的用法 规则：need作情态动词时，常用于否定句和疑问句，意为“需要”，否定式needn't表示“不必”； 作实义动词时，后接todo,否定式借助don't/doesn't 例题1：（选择）：一-Need I finish the work now?一No,you一.You can do it tomorrow.A.mustn't 1 9年级沪外版 【寒假专版】 B版考点精讲 B.needn't C.can't D.shouldn't (答案：B) 例题2： (填空)：We_(need)to prepare for the exam this weekend. (答案：need) 考点综合训练 一、 单项选择 1.The door is locked.Hebe out. A.must B.may C.can't D.needn't 2.Youplay with fire.It's dangerous. A.must B.mustn't C.have to D.needn't 3.-I use your phone?I need to call my mom. A.Should B.Must C.Could D.Need 4.-Need we hand in the report today? -No,you_.Tomorrow is OK. A.mustn't B.needn't C.can't D.shouldn't 5.She looks happy.Shehave passed the exam. A.must B.can't C.need D.should 二、语法填空 1.It's too late.We_(have to)take a taxi home. 2.You(should)brush your teeth twice a day. 3.-Is this Jack's notebook? -It_(can't)be his.He never uses red covers. 4.They_(need)to buy some milk from the supermarket. 5.She(may)come to the party tonight,but I'm not sure. 三、句型转换 1.You must finish your homework now.(改为否定句) You_your homework now. 2.He may be in the library.(改为否定句) He in the library. 3.We have to wear uniforms at school.(改为一般疑问句) _you wear uniforms at school? 2 9年级沪外版 【寒假专版】 B版考点精讲 4.You should drink more water..(对划线部分提问) I? 四、篇章填空 It's Saturday today.Tom 1.-(must)get up early because he has a piano lesson.His mom says,"You 2.-(should)practice for an hour every day."Tom asks,"3.-(Could)I watch TV after the lesson?" His mom answers,"Yes,but you 4.(can't)watch for too long.You 5.(have to)finish your math homework first."Tom thinks,"I 6.(may)ask Lily to help me with math.She is good at it." 参考答案 一、 单项选择 1.A2.B3.C4.B5.A 二、语法填空 1.have to 2.should 3.can't 4.need 5.may 三、句型转换 1.needn't finish 2.may not be 3.Do;have to 4.What should;do 四、篇章填空 1.must 2.should 3.Could 4.can't 5.have to 6.may