陈述句的肯定形式
结构例句
主语+be动词+表语I'm a student.
我是一名学生。
It was interesting.
它很有趣。
主语+实义动词+其他The girl likes singing.
这个女孩喜欢唱歌。
I often play basketball with my brother.
我经常和我哥哥打篮球。
主语+情态动词+动词原形+其他I can finish my homework on time.
我能够按时完成家庭作业。
陈述句的否定形式
结构例句
主语+be动词+not+表语I'm not angry.
我没有生气。
The weather is not fine.
天气不好。
主语+助动词+not+动词原形+其他I don't like apples.
我不喜欢苹果。
The girl doesn't like dancing.
这个女孩不喜欢跳舞。
She didn't do her homework.
她没有做她的家庭作业。
主语+情态动词+not+动词原形+其他I can't find my pen.
我找不到我的钢笔。
常见否定形式的缩写
一般形式缩写形式
is notisn't
was notwasn't
are notaren't
were notweren't
do notdon't
does notdoesn't
did notdidn't
can notcan't
could notcouldn't
should notshouldn't
will notwon't
must notmustn't