洪恩幼儿英语3第一单元包括以下内容：

1. 单词：

– Hello/Hi
– Goodbye
– Thank you
– Please
– Sorry
– Excuse me
– Apple
–

Banana
– Orange
– Grape
– Watermelon
– Strawberry
– Cherry
– Pineapple
– Lemon
– Carrot
– Tomato
– Cucumber
– Potato
– Eggplant
– Pea
– Corn

2. 句型：

– Hello/Hi, I\’m

[name].
– What\’s your name?
– Nice to meet you.
– Goodbye!
– Thank you/Please/Sorry.
– Excuse me, can I have a banana, please?
– What fruit do you like?
– I like [fruit].
– What vegetable

do you like?
– I like [vegetable].

3. 歌曲：

– Hello, how are you?
– Goodbye song

4. 故事：

– The Hungry Caterpillar

以上是洪恩幼儿英语3第一单元的主要内容，希望能对你有所帮助。