Unit 1 At the farm
I 主格： you he she it we they 动词前，做主语 them 动词后，作宾语 their 后面接名词
you him his her her it its us our
形容词性物主代词： my your
名词性物主代词： mine yours his
ours theirs 不能接名词
On the farm, there are many animals. There are cows, ducks, sheep, chickens, horses, goats, cats and dogs. Some children like dogs and some children like sheep and some like ducks, I like all these animals, but my favourite animals are monkeys.
1. 一般单词直接加 s: 2. 以s, x, sh, ch结尾的词，加 es: 3. 以辅音字母加y 结尾的词，y变i，加es: 4. 以f 或 fe 结尾的词，f 或 fe 变为 v加es: desk ---- desks bus ---- buses baby ---- babies leaf ---- leaves
negro 黑人 hero 英雄 volcano 火山 5. 以o结尾加 es的单词有： mango 芒果 potato 土豆 tomato 西红柿 echo 回音（echos, echoes）
zoo city bus piano thief foot baby peach foot sheep
country boy branch knife man this family sandwich book box
tooth car radio leaf woman watch country diary dress
mouse horse photo life child photo strawberry day tooth
There are some horses on the farm. Are there any horses on the farm? Yes, there are. No, there aren't. There aren't any horses on the farm.
There is a horse on the farm. Is there a horse on the farm? Yes, there is. No, there isn't. There isn't a horse on the farm.
Are these dogs dirty?
Yes, they are. No, they aren't.
Is this dog dirty?
Yes, it is. No, it isn't.
dirty 脏的 clean 干净的
This is a beatiful farm, There are many animals on this farm. Under a big tree, there are some chicks and a dog. In a big box in front of the tree, there is a cat. It is yellow. There are two horses in front of a big house. Behind the big house, there are many sheep. Some sheep are white and some sheep are black.
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