格林太太来自美国,她现在教我们英语用英语怎么说

Mrs Green comes from America, she is teaching our English now!

Mrs. Green, coming from the US, is now teaching us English.
用了个定语从句，呵呵

一楼的人的句子有了小毛病
Mrs Green comes from America,she teaches us English now

Mrs Green is from America.
She now teaches us English

格林太太来自美国,她现在教我们英语
Mrs.Green from the United States,she teaches us English now.