I've received over 200 calls in the last few days我最近几天接到了二百多通电话。
当accept a gift时，表示接受了礼物，不会再退回，而receive a gift时，只是收到了礼物，可能还会退回。
2.receive只是一时的动作，因此不能说I have received your letter 3 days.应该改为It is 3 days since I received your letter；
3.receive from/of的意思是“从某处或某人那收到（款项）”，如received from/of Sam seven pounds；
4.在英美英语中回信中的第一句话，通常是Your letter of ... received，常省略is，has been。
You have no idea how much I'm looking forward to going to college next year.你想不到我多么盼望着明年能上大学。
look forward to (doing sth):展望(期待)
We look forward to the return of spring.
I look forward to being alone in the house.
The sailors began to prepare against a rough night.
I had a rough night(= I didn't sleep well).