They're a drag. 那多讨厌，烦死了。
Think nothing of it. 不要放在心上。
This is a small something for you. 小小礼物，不成敬意
This is serious. 我是当真的。
This will be my treat. 这顿饭我请客。
thorn in one's side. 眼中钉肉中刺
thousand and one way 许多办法
three sheets in the wind 酒醉
threw a party 举行一个宴会
thrilled with， be 深受感动;非常高兴
throw cold water on 泼冷水
throw the bull 胡言乱语
tie the knot 结婚
till the cows come home 很久
Times have changed. 时代不同了。
to a T 恰好地
to and fro 到处
to doctor it up with 用……作料拌起来
to one's face 当面
to the best of my knowledge 据我所知
Today just isn't my day. 今天运气不佳。
Tom， Dick and Harry 一般的人;普通的人
too much for sb 使某人承受不了
trade in 以旧换新
treat sb 请客，招待某人
turn a blind eye 故意视而不见
turn a girl's head 把她说得太好;使她以为了不起
turn against sb 与某人做对
turn down 放低(音量);否决(提案)
turn in 交还;交出;就寝
turn one's back on sb 拒绝帮助别人
turn one's back to sb 不理睬某人
turn sb loose 放松;放任
turn tail 逃跑
turn the tables 扭转局势
turn turtle (乌龟、汽车)四脚朝天
twist another around one's little finger 玩弄于股掌之上
Two heads are better than one. 一人计短