英语怎样做否定句，一般疑问句，对划线部分提问，有怎样的技巧一、否定句1.主语+be动词+表语结构变否定句，直接在be动词后面加个not就可以了。Mr. White is a very good teacher.-Mr. White is not a very good teacher.2.主语+动词+其他当此句为一般现在时，在动词之前加dont或doesnt（第三人称单数形式）,并将动词变为原形就可以了He loves playing football with his friends.-He doesnt love playing football with his friends.当此句为过去时，在动词之前加didnt，并且把动词变为原形Toms sister graduated from high school last year.-Toms sister didnt graduate from high school last year.3.主语+情态动词+动词+其他在情态动词后面加not就可以了I can drive a car.-I cannot drive a car.4.主语+have/has+动词过去分词+其他在have/has后面加not就可以了The students have done their homework.-The students have not done their homework.二、一般疑问句1.主语+be动词+表语结构变一般疑问句，把be动词提前，句子就变成 be动词+主语+表语结构？Mr. White is a very good teacher.-Is Mr. White a very good teacher?2.主语+动词+其他当句子为一般现在时，在句首加do或does，并且把动词变为原形，句子变成 Do/Does+主语+动词原形+其他？He loves playing football with his friends.-Does he love playing football with his friends?句子为一般过去时，在句首加did，句子变成 Did+主语+动词+其他？Toms sister graduated from high school last year.-Did Toms sister graduate from high school last year?3.主语+情态动词+动词+其他将情态动词提前，句子变成 情态动词+主语+动词原形+其他？I can drive a car.-Can you drive a car?4.主语+have/has+动词过去分词+其他将have/has提前，句子变成have/has+主语+动词过去分词+其他The students have done their homework.-Have the students done their homework?三、对划线部分提问先找出划线部分在句子中所占得成分，找到对应的疑问词，将疑问词写在句首，再将原句变成一般疑问句，却掉划线的部分，写在疑问词后面就可以了。Tom bought a new computer from the store yesterday.若划线部分为Tom，Tom 是个人，且作主语，则疑问词应选Who， 此句应该为 Who bought a new computer from the store yesterday?若划线部分为a new computer， 划线部分为物，则疑问词为what，此句应为 What did Tom buy from the store yesterday?若划线部分为from the store,则疑问词应为Where，表示地点，此句应为 Where did Tom buy a new computer yesterday?若划线部分为yesterday,则疑问词为When，表示时间，此句应为 When did Tom buy a new computer from the store?简单的说：对人物提问用who 对事物提问用what（对一件事情或者一个东西提问） 对地点提问用where 对时间提问用when固定短语搭配一、动词+介词1look at看，look like 看上去像，look after 照料2listen to听3welcome to欢迎到4say hello to 向问好5speak to对说话此类短语相当于及物动词，其后必须带宾语，但宾语无论是名词还是代词，都要放在介词之后。如：This is my new bike. Please look it after.()This is my new bike. Please look after it.()二、动词+副词“动词+副词”所构成的短语义分为两类：A动词（vt.）+副词1put on 穿上 2take off脱下 3write down记下此类短语可以带宾语，宾语若是名词，放在副词前后皆可；宾语若是人称代词，只能放在副词的前面。试比较：First listen to the tape, then write down the answer/write the answer down. ()First listen to the answer, then write down it.()First listen to the answer, then write it down.()B动词（vi）+副词。1come on赶快 2get up起床 3go home回家 4come in进来 5sit down坐下 6stand up起立此类短语属于不及物动词，不可以带宾语。