leap at(v.+prep.)
▲leap at sth
1.朝…跳去try reach sth with a jump
The dog is leaping at him.这只狗朝他跳过去。
2.〈非正〉迫不及待地接受某事物accept sth eagerly, without hesitation
He leaped at the chance.他立即抓住机会。

leap forward(v.+adv.)
▲leap forward
1.向前跳〔冲〕move suddenly ahead
The horse leaped forward.那匹马突然向前冲。
2.〈非正〉迅猛发展develop very fast
New discoveries have leaped forward.新的发明发展迅速。

leap in(v.+adv.)
▲leap in
1.跳进enter sth with a springing movement
We are talking, when he leaped in.我们正在谈话,他跳了进来。
2.〈非正〉急于做某事be eager to do sth
Please don't leap in.请不要急着做这事。

leap into(v.+prep.)
▲leap into sth
1.跳入jump into
He leaped into the river.他跳进河里。
2.〈非正〉突然进入suddenly enter;eagerly begin
He leaped into the house.他突然进到房子里。

leap out(v.+adv.)
▲leap out
1.跳出jump or spring out from somewhere
A frog leaped out.一只青蛙跳了出来。
2.〈非正〉显而易见be noticeable
His name leaped out at me from the book.我一眼就在书上看到他的名字。

leap out of(v.+adv.+prep.)
1.从(某处)跳出来leave (a place) with a sudden movement
▲leap out of sth
She leaped out of the house.她从房子里跳出来。
2.〈非正〉吃惊,惊喜receive the shock of a surprise, sometimes with joy
▲leap out of oneself〔one's skin〕
You made me leap out of my skin.你使我大吃一惊。

leap up(v.+adv.)
▲leap up
1.跳起spring upwards
He leaped up at me.他扑向我。
2.突然从座位上起身rise from one's seat suddenly
He leaped up from his chair.他从座位上跳起来。
3.加快become quick by feeling
Her heart leaps up.她的心跳加快。

用作不及物动词
▲S+～(+A)
His heart leaped and he felt himself red-dening.他的心在跳,他感觉自己的脸红了。
He is leaping.他正在跳。
Look before you leap.三思而后行。
用作及物动词
▲S+～+n./pron.
He leaped a gate.他跳过大门。
The horse leaped a stream.这匹马跃过小溪。

leap,bound,hap,jump,skip,spring
参见jump条。

leap用作名词的基本意思是“跳跃,激增”,作“激增”解时表示数量上的增加,常后跟介词in。

a leap in the dark
结果不可预料的行动action of uncertain outcome
Her marriage to John was a leap in the dark.她与约翰结婚是贸然行动。

by leaps and bounds
非常迅速,突飞猛进very quickly and successfully
Her French is improving by leaps and bounds.她的法语进步非常快。

He took a leap over an obstacle.他跃过障碍物。
Their income went up with a leap.他们的收入突然增加。
There has been a leap in the number of births in Britain.英国的出生人数出现了剧增。

［同义词］ v. jump, spring
［词源］＜古英语hleapan(跳)