请教几个课堂用语用英文怎么说？

1.son,i like your generosity and your spirit to help others.i am proud of you.
2.i am sure you listened attentively to it.you really have such a pair smart ears that you had attention to these hairlike points.
3.Xiaoming in the first group is very excellent.he won a twinkling pentacle for his group.
4.you know so many things,so i believe you have rich knowledge.everyone should learn from you.
5.teachers believe in you,at the same time,you should trust yourself that you can make it well.
6.you can still finish your homework so well though it is so much.great ,this is persistence.