课件19张PPT。Unit 4
At the farmLet's learn & Let's chant Part ALearning goals1.能够听、说、认读4个有关蔬菜的单词：tomato,
potato, carrot, bean。
2.能够在语境中正确运用这4个单词的复数形式描述蔬菜。
3.能够在图片的帮助下听懂并跟读歌谣；能够替换关键词编创新的歌谣。Let's learn potatocarrottomatogreen beansNew wordspotato
carrot
tomato
green beans课 文Look at the green beans. They’re so long!Yes, and the potatoes are big.Role-playAnswer the questions1.What are they talking about?
_____________________________
2.How many kinds of vegetables in the picture?
_____________________________
3.The green beans are _________ and the
potatoes are __________.They are talking about vegetables.They are four kinds of vegetables.so longbig单词精讲tomatoes, potatoes, carrots, green beanstomatoes是tomato的名词复数，即在tomato后面
加es，类似的单词还有potato → potatoes（土豆）。
名词分为可数名词和不可数名词两种。可数名词通
常能一个一个的数，所以有单数和复数两种形式。不可
数名词，顾名思义，不能一个一个的数，所以没有复数
形式。可数名词单数变复数时，有一些是规则的，有规
律可循；有一些是不规则的。(1)规则的名词复数的变化规律：(2)常见的不规则名词的复数形式：
①单复数相同，例如：sheep →sheep（绵羊）；
fish →fish（鱼）
②元音字母变化的，如：man →men（男人）；
woman → women(女人)；foot →feet（脚）；
tooth →teeth（牙齿）
③词尾发生变化的，如：child →children(孩子)Let's chant I like tomatoes.
I like potatoes.
Carrots I will try.
I love to eat green beans.
But onions make me cry.Exercise一、单项选择。( ) 1. Look at these! Are these ____________?
A. tomatoes B. carrot C. potatos
( ) 2. —What are these?
—____________.
A. These are apples.
B. They are sheep.
C. They are carrot.AB二、根据句意按所给词的适当形式填空。1. Do you like these yellow __________(西红柿)？
2. Look at the ____________（四季豆）. They
are so long.
3. __________（试吃一些）！ They’re good.
4. I love __________（吃）green beans.green beansTry someto eattomatoesHomeworkCompare(比较) you with your classmates and write an essay. Use the words and sentence we learnt today.
Tips: ① tomato、potato、carrot、green beans
② The potatoes are big.
