Unit 4 More about animals,Walking Walking,words,eat,sleep,fight,hop,run,swim,What are they doing?,现在进行时,定义：现在进行时表示现在正在进行或发生的动作。 结构：,主语,be动词,v i n g,现在进行时的变化规则,1.直接加ing. 如：play+ingplaying. sing+ingsinging. 2.去掉不发音的e+ing. 如：write去e+ingwriting 3.重读闭音节，以辅音字母+元音字母+辅音字母结尾的词，要双写尾字母再加ing。 如：run+n+ingrunning.,辅元辅,给小鸡找妈妈,dance,swim,sing,+ing,双写+ing,去e+ing,He,play,football.,is,ing,She,is,read,ing,a book.,I,am,run,ning.,Listen!,The bird,is,sing,ing.,They,watch TV.,are,ing,The man,run,is,ning.,The boy,swim,is,ming.,The teacher,write,is,ing.,They,dance,are,ing.,Guess: What are they doing?,Lets play a game:,Who is the guessing champion?,Are they + v-ing? Is it/he/she + v-ing?,What are they doing now?,What is the cat doing?,What is the cat doing?,Whats she doing?,What are they doing?,What is the bear doing?,Guessing Game,What is the pig doing?,Guessing Game,What is the boy doing?,Guessing Game,What is the girl doing?,Practice,How many are there? There are What are they doing? They are 注意单数时句型的变化,