just 是刚刚,i met lily just now;我刚才看见丽丽了。 yet是还没有。例如I have not finish my homework yet;意思是我还没有完成作业, already 是已经。I have already finish my homework .意思是我已经做完作业了。 never 是次那个来都没有。I never went to Beijing.意思是我从来没去过北京。 ever是曾经,以前。I ever made this mistake.意思是我曾经犯过这样的错误。 一个词可能会有不同的解释,把它和时态联系起来,放在句子里就容易理解了。
第2个回答 2011-02-25
just 意为"刚刚"置于have done 的中间,如 I have just borrowed a book from the library. yet 意为“已经,还”,用于疑问句,否定句中,置于句尾。Have you handed in the composition yet? I haven't handed it in yet. already "已经 ”用于肯定句,置于句中或句尾。I have already returned the book.或者 I have returned the book already. 用于疑问句表示很惊讶。Have you had your lunch already? never"从来不 "表示否定,置于句中。 I have never been to Macao. ever"曾经 置于句中。Have you ever been to Hong Kong?