I would like to send this by registered mail, please.
我想把这封信挂号寄出。
Try to be there by 8:15 the airport will be crowded.
尽量在8点15分以前赶到那里,到时机场会很拥挤的。
He loved to be told that one of his imaginary products was temporarily out of stock and he would faithfully promise to call again at some future date, but of course he never did.