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：肯定句：I read a book last night.
否定句：I didn't read a book last night.
现在时：肯定句：I am in the room.
否定句：I am not in the room.
一般将来时：肯定句：I will go to Beijing.
否定句：I won't go to Beijing.
现在进行时：肯定句：I am cleaning the floor.
否定句：I am not cleaning the floor.

过去时：
肯定.I worded in a school.
否定.He didn't study hard.
现在时：
肯定.I am a student.
否定.She isn't my sister.
一般将来时：
肯定.I will go home next week.
否定.He won't be a doctor.
现在进行时：
肯定.I am reading a book.
否定.They aren't swimming.

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 ...