十、简单句
1.简单句的特点：简单句通常只由一个主语和一个谓语构成。
2.简单句的种类：简单句一般分为陈述句、疑问句、感叹句和祈使句四种。
3.陈述句：
用来说明一个事实的句子叫陈述句。它有肯定式和否定式两种形式。
陈述句的肯定式： He is a middle school student./ I have a hammer in my hand./ She teaches us geography./ The new play was good enough and everybody enjoyed it.
陈述句的否定式：
1) 谓语动词如果是 be 、助动词、情态动词时,在它们的后面加not。如：My brother is not a teacher./ He does not have a cousin./ I will not go there tomorrow./ My mother is not cooking a meal in the kitchen./ You must not make such mistakes again. / We havent discussed the question yet.
2)谓语动词如果没有上述词语而是其他动词时,须在它的前面加do not.如： I dont know anything about it. / Li Ming does not feed pigs in the countryside./ We didnt expect to meet her right here./ We didnt have a meeting yesterday afternoon.