“我盼望听到母亲的消息。”“他交她法文以交换学英文。”句中分别要用到“look forward to”和“exchange”
I look forward to hearing from my mother.
He taught her French in exchange for English. I am looking forward to hearing from my mum_ He teaches her French in exchange for learning English. I look forward to hearing from my mother. He teaches her French in exchange for English.