1、祈使句，祈使句，请求、命令或建议。祈使句，祈使句，请求、命令或建议。主语是主语是you常省去，常省去，动词原形动词原形开头记。开头记。否定形式要注意，句首要把否定形式要注意，句首要把 Dont 加。加。要讲客气用要讲客气用please，句首句末没关，句首句末没关系。系。让我们一起看这个歌谣:1.祈使句的用法例如：Open the door,please.请把门打开。a.a.祈使句的肯定句祈使句的肯定句 动词原形动词原形动词原形开头动词原形开头+其它成分其它成分Sit down,please.请坐b.祈使句的否定句祈使句的否定句在祈使句的肯定句式前加Dont，构成Dont+动词原形动词原形+其它
2、成分其它成分例如：Open the door,please.（改成否定句）Dont open the door,please.请不要把门打开。c.祈使祈使句句的回答一般是的回答一般是：OK/All right./Yes,.1.Look at her.(改为否定句)_ look at her.2.Dont close your eyes,please.(改为肯定句)_ your eyes,please.3._ run in the classroom.A.Please notB.Please dont C.PleaseLets try：DontCloseB2.please的用法 please请，
3、可放句首，也可放句尾。放句首要大写P,无需用逗号隔断；放句尾无需大写，但please前要加逗号隔断。请关上窗户。1._.2._.Please close the windowClose the window,please3.would like=want 想要 would like sth.=want sth.想要某物想要某物 would like to do=want to do 想要做某事想要做某事I _ a new schoolbag.I _ swim.would likewould like toTip:sth.某事、某物do 表示动词wantwant to()I want_some
4、drink.A.drink B.to drink C.eatBwant to do 想要做某事4.in the tree与on the tree2.on the tree:指树自身所有树自身所有，长在树上的东西 例句：There are some apples on the tree.1.in the tree:指外界外界的事物在树上，而非树木自身生长 例句：Theres a bird in the tree.()当你想告诉别人猴子在树上，你可以说：A.Its in the tree.B.Its under the tree.C.Its on the tree.A5.in class与in t
5、he class 两者相差一个定冠词the,但意思并不相同。in class侧重强调的是上课，意思是：在上课，在课堂上；in the class侧重强调的是地点，意思是：在班级里。不要在课上吃东西。Dont eat _.班级里有一位老师。There is one teacher _.in classin the class6.look与look at 两者词性和强调的事物不同。look是单词，强调看的动作，它做不及物动词，后面可以不加宾语；look at是短语，强调看的对象，此时的look同样做不及物动词，后面连接的宾语需要用at连接，因此这是固定搭配look at sb./sth.。Tip:sb.某人sth.某事、某物看！小鸟在树上。_!The little bird is in the tree.看树上的小鸟！_the little bird in the tree!LookLook atBobby_(不在这里)is herenot肯定句变否定句：有be 动词的直接在be动词后面加not
