A. have B.has C. having D.haveing
时态训练 一般现在时(三)
I.一般现在时句型变化--否定句、一般疑问句及回答、特殊疑问句:
1. be动词的变化。
否定句:主语+ be + not +其它。
如:He is not a worker.他不是工人。Tom and Alice are not here.汤姆和爱丽丝不在这儿。
一般疑问句:Be +主语+其它。
如①-Are you a student? ②-Is she a pretty girl? ③-Are they happy?
-Yes. I am. / No, I'm not. -Yes, she is./ No, she isn’t. –Yes, they are./ No, they aren’t.
2.行为动词的变化。
否定句:主语+ don't( doesn't ) +动词原形(+其它)。如:
I don't like bread. We don’t read these books. My friends don’t play basketball.
当主语为第三人称单数时,要用doesn't构成否定句。如:
He doesn't often play. This girl doesn’t play football everyday.
一般疑问句:Do( Does ) +主语+动词原形+其它。如:
①- Do you often play football? ②-Do the doctors smile everyday?
- Yes, I do. / No, I don't. -Yes, they do. /No, they don’t.
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