陈述句
(1)肯定句：是指用肯定的语气来陈述的句子，如：
I’mastudent.
Sheisadoctor.
Heworksinahospital.
Therearefourfansinourclassroom.
Hewilleatlunchat12:00.
IwatchedTVyesterdayevening.
(2)、否定句：含有否定词或表示否定意义词的句子，如：
I’mnotastudent.
Sheisnot(isn’t)adoctor.
Hedoesnot(doesn’t)workinahospital.
Therearenot(aren’t)fourfansinourclassroom.
Hewillnot(won’t)eatlunchat12:00.
Ididnot(didn’t)watchTVyesterdayevening.