陳述句： 就事物依照其實(shí)在情形陳述的句子叫做陳述句.陳述句的句末必須使用句號(hào)（Full Stop）“.” 以示句子的陳述結(jié)束.
陳述句分為肯定句和否定句（全否定和半否定）
肯定句：基本結(jié)構(gòu)為主 + 謂
例如：It is cold in winter.
He went to London to pass his holiday.
否定句：
1、全否定：用not, no, never, neither, none, nothing等否定.表示“完全不是,完全不”的意思.
例如：He is not a worker.
Nothing is wrong with me.
2、半否定句：在句子里用否定詞hardly, scarcely, little, few, seldom, rarely等.
例如：I hardly see anything in the room.
=I can see little in the room.
“all/both/every/each/ 謂語 not”表示概念為“有的是,有的不是”
例如：All of them are not students.
=Some of them are students, some are not.
3、賓語從句的否定形式：用在think, believe, suppose引導(dǎo)的賓語從句里則否定主句.
例如：I don't think he'll come.
=He will not come in fact, I think.