一般现在时的肯定句否定句和疑问句特殊疑问句和单三人称形式?
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这个分三种情况:
动词是系动词:变一般疑问句把系动词提前,否定句在系动词后加not.单三形式is.(常见系动词am,is,are)
肯定句:He is a worker.
疑问句: Is he a worker?
否定句:He isn't a worker.
特殊疑问句:What is he ?( 对worker进行划线提问)他是干什么的?(问职业)
实意动词:变一般疑问句句前加助动词do,does. 否定句在动词前加don't,doesn't..单三形式动词后一般加s,es.
肯定句:He likes English.
疑问句: Does he like English?
否定句:He doesn't like English.
特殊疑问句:What does he like ?
情态动词:变一般疑问句把情态动词提前,否定句在情态动词后加not.单三形式不变.(常见情态动词can,may,must,need.)
肯定句:He can swim.
疑问句can he swim?
否定句:He can't swim.
特殊疑问句:What can he do ?
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