on the tip of your tongue ……就在嘴边

Her name is right on the tip of my tongue—Helen something or other, what is her last name!
她的名字就在我嘴边，海伦什么的，她姓什么来着？

loosen one's tongue 酒后不自觉地说很多话（主语一般是酒）

The vodka really loosened her tongue and I found out exactly what happened that night.
喝了伏特加酒之后，她就开始话多了起来，我终于发现了那天晚上到底发生了什么。

cause tongues to wag 使（人们）议论纷纷、说闲话

The way Mary was so scantily dressed will also cause tongues to wag.
玛丽穿得那么暴露，肯定会让人说闲话的。

sharp tongue 说话尖利、刻薄

He has quite a sharp tongue. Don't be totally unnerved by what he says or the way he says it.
他就是说话刻薄，别因为他说的话或是他说话的方式生气。

bite one's tongue 忍住不说

I really wanted to tell her what I thought of him but I had to bite my tongue.
我很想跟她说我对他的看法，但是我还是忍住没说。

forked tongue 骗人的假话；谎言

Don't trust the guy. He usually speaks with a forked tongue. He'll promise you to do one thing but more often than not he'll turn around and do exactly the opposite.
可别信任那家伙，他老是说假话。他会答应你去做一件事情，但是通常却阳奉阴违，干出适得其反的事儿来。

find one's tongue 开口说话

She wanted to say something but couldn't find her tongue.
她想说话，但一时却说不出来。

silver-tongued 雄辩的，很会说话的

He was a silver-tongued orator.
他是位口才很好的演说家。

a tongue-lashing 斥责、训斥

When I was ten years old, mother caught me smoking a cigarette in the backyard. She gave me such a tongue-lashing that I've never touched another cigarette all my life.
我十岁的时候躲在后院抽香烟时给妈妈抓到了。她狠狠地训了我一顿，我一辈子再也没碰过香烟。