Unit4 At the farm PartA Let's learn课件(共11张PPT)

(共11张PPT)
四年级（下册）
Unit Four
At the farm
Let's learn
知识讲解
Look at the green beans. They're so long!
Yes, and the potatoes are big.
知识讲解
tomato 西红柿
potato 马铃薯；土豆
carrot 胡萝卜
green beans 豆角；四季豆
知识讲解
可数名词单数变复数的规则
情况 构成方法 例词
一般情况 在词尾加“-s” book-books
以-s, -sh, -ch, -x结尾的名词 在词尾加 “-es” bus-buses
watch-watches
以辅音字母加y结尾的名词 先变y为i，再加“-es” baby-babies
story-stories
以-f或-fe结尾的名词 变f或fe为v，再加“-es” leaf-leaves
knife-knives
知识讲解
以“o”结尾的名词单数变复数
一般情况下，表示有生命的事物的名词后加-es。
eg: potato—potatoes tomato—tomatoes
hero—heroes
表示无生命的事物的名词后加-s。
eg: piano—pianos radio—radios
Let's chant
说一说
I like tomatoes.
I like potatoes.
Carrots I will try.
I love to eat green beans,
But onions make me cry.
练一练
Read and match.
tomato
onion
carrot
potato
练一练
Read and write.
1. potato (复数) _________
2. It is a tomato.(变为复数句子) ____________________
3. ______ those tomatoes. They're yellow!
A. Look B. Look at C. Look to
4. carrot (复数) __________
5. Are these green beans (作肯定回答)
___________________________________
potatoes
They are tomatoes.
carrots
Yes, they are.
B
See You!