主语 can 动词原形-2025-2026学年七年级英语上册句型辨析（北师大版）

初一上册北师大版 【寒假专版】 C版句型辨析 寒假专版 【C版句型辨析】主语+can+动词原形精 讲 初中英语·北师大版初一上册 句型辨析精讲 辨析一can vs be able to 维度 can be able to 时态限制只有现在时(can)和过去时 可用于各种时态（现在过 (could) 去/将来/完成时等) 含义侧重强调”能力”本身或习惯性动 强调通过努力”成功做到某 作 事的结果 例句对比 I can speak English.(具备说英语的能力) She was able to finish the work on time yesterday.(通过努力成功完成) 真题链接（北师大版初一上册月考真题） My grandfather swim very fast when he was young A.can B.could C.is able to 答案：B解析：时间状语when he was young表示过去，用could:can用于现在时，排除A:is able to时态不符，排除C。 辨析二can vs may 维度 can may 核心含义表”能力”或”许可（口语中）表”许可”（正式/礼貌）或”可 能性， 疑问用法CanI.?(口语请求许可) MayI.?(更礼貌的请求) 初一上册北师大版 【寒假专版】C版句型辨析 例句对比 Can you play the piano?(能力) May I borrow your pen?(礼貌请求许可) 真题链接（北师大版初一上册同步练习） I use your dictionary? -Sure,here you are. A.Can B.May C.Must 答案：B解析：请求许可时，may比can更正式礼貌，根据答句Sre”,选B。 辨析三can vs must 维度 can must 语气强度表”能力”或”允许”（可能性 表”必须”（强制语气）或”肯 较弱) 定推测 否定形式cant(”不能”或”不可能) mustn't(”禁止”) 例句对比 You can't park here..(不允许停车) You mustn't park here..(禁止停车，语气更强) 真题链接（北师大版初一上册期末真题） -Is that Lucy's bag? -No,it be hers.Her bag is red,but this one is blue. A.can't B.mustn't C.needn't 答案：A解析：根据后文”她的包是红色，这个是蓝色，表否定推测不可能是她的”，用cat: mustn't表禁止，排除B。 2 初一上册北师大版 【寒假专版】C版句型辨析 辨析四can vs have to 维度 can have to 情感色彩 主观能力或意愿 客观需要或义务(”不得不) 时态变化过去式为could 有人称/时态变化(has to,had to) 例句对比 I can help you with your homework.(主观意愿) I have to finish my homework first..(客观需要) 真题链接（北师大版初一上册期中真题） It's raining heavily,so we stay at home. A.can B.have to C.may 答案：B解析：前句”雨下得大”是客观原因，表”不得不待在家'，用have to;can和may表能 力或许可，不符合语境，排除A、C。 综合训练 一、 单项选择 1.My little sister ride a bike when she was five years old. A.can B.could C.is able to 2.-I leave the classroom early,Mr.Wang?I have a doctor's appointment A.Can B.May C.Must 3.You smoke in the library.It's against the rules. A.can't B.mustn't 3 初一上册北师大版 【寒假专版】C版句型辨析 C.needn't 4.The students wear uniforms to school every day.It's a school rule. A.can B.have to C.may 二、选短语填空/完成句子 从can/could/be able to/may/must/have to中选择合适的词填空 1.We finish the project before Friday because the deadline is approaching. 2.My grandma speak three languages when she was young,but now sheonly remember a few words. 3.-you help me carry this heavy box? Sure,no problem. 4.It's getting dark,so we go home now. 三、句型转换 l.He can swim very well.(用when he was ten改写句子) 2.You mustn't play football in the street..(改为否定推测'不可能”) 3.They have to take the bus to school.(改为一般过去时) I单项选择 1.B2.B3.B4.B Ⅱ.选短语填空/完成句子 1.have to 2.could;can 3.Can 4.have to ⅡL.句型转换 1.He could swim very well when he was ten. 2.You can't play football in the street. 又 初一上册北师大版 【寒假专版】C版句型辨析 3.They had to take the bus to school 5