(5)第三人称单数的肯定句在变为否定句时,在动词的前面加doesn't.动词恢复原形。如:He lives in Beijing.---He doesn't live in Beijing.
(6)第三人称单数的陈述句在变为一般疑问句时,用does开头,后面的动词也要变为原形。如:He lives in Beijing.---Does he live in Beijing?注意:用来does,后面的动词就不能用第三人称形式。
3、注意几个单词的变化:hobby(复数形式)-hobbies have to(同义词)-mus same(反义词)---different look the same看起来一样