3 by and large 大 体 说 来
如果你说 I'll be home by ten o'clock,你的意思是你要在10点或10点以前到家,但绝不会晚于10点。如果你说 I'll be home before ten o'clock,你的意思是10点是你到家的最晚时间,你可能9点以前就到家了。如果你说 I'll be at home until ten o'clock,你的意思是10点以前你会在家里,但10点以后就不在了。当我们谈论某人写了一本书或剧本、导演了一部电影、作了一部乐曲或画了一幅画时,我们说一部作品是 by 那个人或是 written by 那个人。...three books by Jane Austen...a collection of piano pieces by Mozart...a painting by Picasso 当我们谈到某人给你写信或留言时,我们说信或留言是 from 那个人。He received a letter from his brother...It's a message from your boss.