四年級下冊英語課件 Unit 4At the farm 人教PEP版 (2)(共14張PPT)

1、Unit 4 At the farmPart ALets learn & Lets chantLets learn potatocarrottomatogreen beansNew wordspotatocarrottomatogreen beansAnswer 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 veget

2、ables.They are four kinds of vegetables.so longbig單詞精講tomatoes, potatoes, carrots, green beanstomatoes是tomato的名詞復數，即在tomato后面加es，類似的單詞還有potato potatoes（土豆）。名詞分為可數名詞和不可數名詞兩種?？蓴得~通常能一個一個的數，所以有單數和復數兩種形式。不可數名詞，顧名思義，不能一個一個的數，所以沒有復數形式?？蓴得~單數變復數時，有一些是規(guī)則的，有規(guī)律可循；有一些是不規(guī)則的。(1)規(guī)則的名詞復數的變化規(guī)律：一般情況下，直接在名詞后面加s。dog d

3、ogs（狗）;window windows（窗戶）以s,x,sh,ch等結尾的名詞，要在詞尾加es。bus buses（公共汽車）；box boxes（箱子）以“輔音字母+y”結尾的名詞，要把y變成i，再加es。library libraries（圖書館）；strawberry strawberries（草莓）以o結尾的名詞大多數直接加s。zoozoos（動物園）(tomato,potato除外)以f或fe結尾的名詞，變f或fe為v，再加es。knifeknives（小刀）；leafleaves（葉子）(2)常見的不規(guī)則名詞的復數形式：單復數相同，例如：sheep sheep（綿羊）； fis

4、h fish（魚）元音字母變化的，如：man men（男人）； woman women(女人)；foot feet（腳）； tooth teeth（牙齒）詞尾發(fā)生變化的，如：child children(孩子)Lets chant Exercise一、單項選擇。( ) 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、根據句意按所給詞的適當形式填空。1. Do you like these yellow _(西紅柿)？2. Look at the _（四季豆）. They are so long.3. _（試吃一些）！ Theyre good.4. I love _（吃）green beans.green beansTry someto eattomatoesHomeworkCompare(比較) you with your classmates and write an essay. Use the words and sentence w