leave sth aside 不予考虑；搁置一边
Leaving the expen aside, do we actually need a cond car? 且不说费用多少，我们真的还需要一辆汽车吗？
leave sb/sth behind
1、比…取得好得多的进展；把…抛在后面；超过（常用被动）Britain is being left behind in the race for new markets.
英国在开拓新市场方面正被甩在后面。
2、永久离开（某人、某地或某国）
She knew that she had left childhood behind.
她知道童年已一去不复返了。
leave off 停止（做某事）；中断
Start reading from where you left off last time.
从上次停下来的地方接着读吧。
He left off playing the piano to answer the door.
他停止弹钢琴，应门去了。
leave sb/sth off (sth) 不把…列入；不包括；不含
You've left off a zero.
你漏掉了一个零。
We left him off the list.
我们未把他列入名单。
leave sb/sth out (of sth) 不包括；不提及
Leave me out of this quarrel, plea.
请别把我牵扯进这场争吵。
He hadn't been asked to the party and was feeling very left out. 他未被邀请参加聚会，感到颇受冷落。
She left out an ‘m’ in ‘accommodation’.
她在accommodation一词中漏掉了一个字母m。
be left over (from sth) 剩下；残留
There was lots of food left over. 饭菜剩下了不少。
