过去时现在时一般将来时现在进行时的肯定句否定句的例子

过去时：They went to Beijing。They didn't go to Beijing。现在时:They like English。They don't like English。一般将来时:形式一：They are going to play football。They are going to play football。形式二：They will play football。They will not play football现在进行时:They are playing football。They are not playing football。以上所有时态的例句中,前一句是肯定句,后一句是否定句。