be good at doing sth-2025-2026学年七年级英语上册句型全解（北师大版）

初一上册北师大版 【寒假专版】A版句型全解 寒假专版 【A版句型全解】be good at(doing)sth 初中·北师大版·初一上册 基本结构 句型结构：be good at(doing)sth be动词随主语人称和数变化(am/is/are);at为介词，后接名词、代词或动名词(doing sth); 表示“擅长做某事”。 例句展示： She is good at singing.(她擅长唱歌) They are good at playing basketball..(他们擅长打篮球) I am good at English.(我擅长英语) 句型精讲（核心考法） 考法1：be good at后接动词的形式 规则 be good at中的at是介词，后接动词时需用动名词形式（即动词-ing) 例句 例句l:She is good at singing.(她擅长唱歌。) 例句2：They are good at playing basketball.（他们擅长打篮球。) 真题再现（北师大版初一上册Unit3同步练习） He is good at (swim). 答案：swimming 解析：at是介词，后接动词swim需用动名词形式swimming。 初一上册北师大版 【寒假专版】A版句型全解 考法2：be good at的否定形式 规则 在be动词后加not,构成be not good at,意为“不擅长.” 例句 例句l:I am not good at dancing.(我不擅长跳舞。) 例句2：Tom is not good at English.(汤姆不擅长英语。) 真题再现（北师大版初一上册Unit5课堂检测） She good at playing the piano.(改为否定句) 答案：is not 解析：在be动词后加not构成否定形式。 考法3：be good at的同义短语转换 规则 be good at..的同义短语为do well in,两者可以互换，后接动词时同样用动名词形式 例句 原句：She is good at math.同义句：She does well in math. 原句：He is good at running.同义句：He does well in running 真题再现（北师大版初一上册Unit7同步测试） He is good at English.(改为同义句) He in English. 答案：does well 解析：be good at可替换为do well in。 考法4：be good at句型的人称和数的变化 规则 初一上册北师大版 【寒假专版】A版句型全解 be动词需根据主语的人称和数进行变化(I→am:you→are:he/she/it→is;复数主语→are) 例句 例句1：I am good at swimming..(我擅长游泳。) 例句2：He is good at playing chess..(他擅长下棋。) 例句3：We are good at speaking Chinese.(我们擅长说中文。) 真题再现（北师大版初一上册Unit2基础练习） My sister good at dancing.(填be动词) 答案：is 解析：主语my sister是第三人称单数，be动词用is。 句型综合训练 训练1：单项选择（考察be good at核心考法） l.She is good at」 stories to her little sister. A.tell B.tells C.telling D.told 2.My parents not good at using smartphones. A.am B.is C.are D.be 3.Tom does well in English,and he also good at math. A.am B.is C.are D.be 4. you good at playing table tennis? A.Am B.Is C.Are 3 初一上册北师大版 【寒假专版】 A版句型全解 D.Be 5.Lily is good at dancing,and her brother good at singing. A.am B.is C.are D.be 训练2：同义句转换（考察be good at同义短语转换） 1.He does well in playing basketball. →He at playing basketball. 2.My sister is good at drawing cartoons. →My sister in drawing cartoons. 3.They are good at speaking French. →They in speaking French 4.We do well in swimming. →We at swimming. 5.The boy is good at playing the guitar. →The boy in playing the guitar. 训练3：完成句子（考察be good at句型运用） 1.我擅长弹钢琴。 →I good at the piano. 2.她不擅长打篮球。 →She not good at basketball 3.他们擅长唱歌和跳舞。 →They good at and 4.我的弟弟擅长游泳。 →My brother good at 5.我们擅长说英语。 →We good at English. 训练4：写作高级句式（考察be good at实际运用） 初一上册北师大版 【寒假专版】A版句型全解 1.她擅长用英语写日记。 →She good at diaries in English 2.他不仅擅长踢足球，还擅长跑步。 →He is good at football and also good at 3.我们班同学都擅长解决数学问题。 -All the students in our class good at math problems 参考答案 I.训练1：单项选择 1.C2.C3.B4.C5.B Ⅱ.训练2：同义句转换 1.is good 2.does well 3.do well 4.are good 5.does well I.训练3：完成句子 1.am;playing 2.is,playing 3.are;singing;dancing 4.is,swimming 5.are;speaking V.训练4：写作高级句式 1.is;writing 2.playing;running 3.are;solving 5