H

have a hand in参与做

help oneself 自己动手

have a short memory 健忘, 记忆力差

have one’s hands full with忙于

hit the spot正合口味

have a big mouse 话多的人

have words with sb.与人发生口角

hit the sack睡觉

hit the book 睡觉

how come为什么

have much on one’s mind心头有很多事情

hands down 轻松地,轻易地(赢得)

head and shoulders above比…优秀很多

has a way with words长于言辞,会说话

I

in a blue mood心情不好

in any event无论如何

in good shape处于很好的状态，身体好

in high spirits心情很好

in low spirits 心情不好

in vain白费力气

in the dark 秘密的

in a mass乱糟糟

Is ice cold? 表示理所当然

in the red 赤字,负债

I.O.U 我欠你,借据

in hot water遇到麻烦

I have no idea which way to turn不知道该怎么做

in person面对面,亲自

K

keep an eye on小心，关注

keep in shape保持健康

keep it between two of us这只是你我之间的事情

kill two birds with one stone一石二鸟