三年级英语课堂常用的口语如下：
Beginning a class ( 开始上课)
1. Let's start class. =It's time for class. 上课
2. Hello, boys and girls / children.同学们好
3. Good morning /afternoon, boys and girls / teacher/同学们/老师们,早晨好/下午好
以下是一些三年级英语课堂常用的口语：
Hello!/Hi! 你好！
Good morning, class! 早上好，同学们！
How are you today? 你今天好吗？
Please stand up. 请起立。
Sit down, please. 请坐下。
Thank you./Thanks. 谢谢！
Please answer the question. 请回答问题。
Can you read the word? 你能读这个单词吗？
Can you spell the word? 你能拼写这个单词吗？
Can you say the sentence in English? 你能用英语说这个句子吗？
Do you understand? 你明白吗？
Please listen carefully. 请仔细听。
Please tell me your idea. 请告诉我你的想法。
Let me help you. 让我帮助你。
It's time to start class. 该上课了。
It's time to go to bed. 该睡觉了。
Be careful./Be careful not to fall down./Be careful not to catch cold. 当心！/当心不要摔倒。/当心不要感冒。
Don't be late for school./Don't be late for class. 上学不要迟到。/上课不要迟到。
Don't cry./Don't be sad./Don't feel unhappy./Don't feel lonely. 别哭！/别难过！/别不高兴！/别寂寞！
Let's have a try./Let's play together. 我们试试看。/我们一起做游戏。
