外研版 (一年级起点)四年级下册Unit 2 Don't feed the fish!教课课件ppt

这是一份外研版 (一年级起点)四年级下册Unit 2 Don't feed the fish!教课课件ppt，共17页。PPT课件主要包含了Signs，Must，Example，ACTIVITIES等内容，欢迎下载使用。

A sign tells us t d smething r nt t d smething.
Fr example:Keep quietDn’t litter.
We ften use imperatives in signs.We use Dn’t t tell peple nt t d smething. After Dn’t, we use the base frm f the verb.
Dn’t pick the flwers.
Dn’t walk n the grass.
Dn’t feed the ducks.
We can als use N + ing in signs.
What kind f signs can yu find in the fllwing places? Think f as many as yu can and share yur ideas with yur classmates and teacher.
In the park
Dn’t climb the trees.
Dn’t feed the birds.
In the classrm
N eating r drinking
Dn’t draw n the desk.
Keep quiet.
In the tilet
Flush after use.
Wash yur hands after use.
Dn’t waste the water.
We use must t say that it is necessary t d smething.must = have t / need t
Fr example:Keep quiet.  Yu must keep quiet.
Dn’t run in the classrm.  Yu must nt run in the classrm.
N littering Yu must nt litter.
We mustn’t climb the trees in the park.
We _______________in the park.
Nw yu try.
mustn’t ride a bicycle
We ________________________ .
must queue up utside the classrm
We _________________________ .
mustn’t play ftball in the classrm
We _______________________ .
mustn’t spit
对本课所学内容进行梳理和汇总，自己思考和整理本课的所学与所得。Make sme rules in grups. (in classrm, at schl, at the library, at park)