6.have,has用法口诀 在一般现在时中,三单has,其余have。一般疑问容易变,do和does前边站;如果变为否定句,don't和doesn't主后面。 7.动词第三人称单数形式变化规则 一般现在时(单三形式) | | | | | | teach-teaches;watch-watches | | | | | | |
语法知识 ㈠动词have的一般现在时的结构及用法 1.肯定句结构 谓语动词一般用原形(have),但如果主语是第三人称单数时,谓语动词要用三单形式。 eg:①I have a basketball. ②She has a basketball. 2.否定句结构 一般在谓语动词(have)前加上助动词don't,但如果主语是第三人称单数形式,则加助动词doesn't,注意助动词后用动词原形have。 eg:①I don't have a basketball. ②She doesn't have a basketball. 3.一般疑问句结构:一般在句首加助动词do,但如果主语是第三人称单数形式,则加助动词does,注意助动词后用动词原形have。 eg:①Do you have a basketball? ②Does she have a basketball? 练习: ( )1.I don’t have a soccer ball,but my brother Alan ________ . A. have B.has C.does D.do ( )2.My brother _______ ping-pong every day. A.plays B.play C.don’t play D.doesn’t play ( )3.I ______ have a bat. A.am not B.isn’t C.doesn’t D.don’t ( )4.______ Jim ______ a pen? A. Does;have B.Does;has C.Do;has D.Do;have ( )5.—Does he have a tennis ball? —Yes,he _______ . A.do B.don’t C.does D.doesn’t
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