In the morning I go to school.早晨我去上学

I bow to the teacher，我对老师鞠躬

I say hello to the teacher. 我和老师打招呼

I wave to my mom and say goodbye，我和妈妈挥手说再见

I go to the classroom and shake hands with my classmates and say how are you我去教室和同学们握手并问好

I'm coming.我来了

I'm late.我迟到了

I'm sorry.我很抱歉

I'm home.我到家了

I'm back.我回来了

以上都是刚开学时用得上的英语句子。