lifelong,always,forever三者的区别?

lifelong ：adjective形容词lasting or remaining in a particular state throughout a person's life毕生的,终生的the two men were to remain lifelong friends。两个人会成为终生的好友。always ：adverb副词at all times; on all occasions始终；总是the sun always rises in the east。太阳总是从东方升起。forever ：adverb副词(亦作 for ever)for all future time; for always永远,永久she would love him forever。她会永远爱他。三个词的词性和例句如上。always和forever都是副词,要区别的话,只能看句子本身。一般情况下,always多数用在句中,forever多数用在句末。