一般现在时的肯定句否定句一般疑问句。一般过去时的肯定句否定句一般疑问句。

如题所述

第1个回答  2012-09-05
i have lunch at 12' o clock.
i don't have lunch at 12'o clock .
do you have lunch at 12'o clock?
i called you last night.
i didn't call you last night.
did you call me last night?本回答被提问者采纳
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