1） Take a rain check thank you for the invitation, but I'll have to take a rain-check on it.感谢邀请，但我这次不能来，日后定当践约。 Can I take a rain check? 你能改天再请我吗？ I'll have to take a rain check on that. 这事我只好推迟了。 Give me a rain- check! 请再次给我机会！ Thanks for the invitation, but I'll have to take a rain-check on it. 你的邀请我心领了，感谢盛意改日一定践约。 Thanks for the invitation, but I'll have to take a rain check on it. 你的邀请我心领了,感谢盛意改日一定践约 2） lost count 弄不清楚 I have lost count of time. 我记不得过了多长时间。 I've lost count of how many times that actress has been married. 我已记不清那位女演员结过几次婚。 I have bought so many new books these years that I've lost count of them. 这几年我买的书太多了，不知道一共有多少本。 They lost a number of planes; the count takes a day or so to firm up. 他们损失了若干飞机，具体数字要一，两天才能证实。 I lost count of the number of times I saw him with bandages and plasters on his fingers. 我已记不清有多少次看见他的手指上缠着绷带或胶布了 3） be in another world 精神恍惚；魂不守舍 4） make yourself at home 随意，随便 5） save your breath 省口气吧；别白费口舌了 6） make sense 有意义，理解 7） cost sb. an arm and a leg 非常昂贵 8） burn a hole in one's pocket 很快地被花光 9） fill one's shoes 很好地顶替；令人满意地替代 10）is ice cold 表示理所当然 11）like apples and oranges 用来表示无法相比的事物 13）lose one's train of 忘记 14）meet each other half way 相互妥协，让步 15）on the dot 准时；正点 16）once and for all 最后一次；干脆 17）out of earshot 不在听力所及范围 18）out of this world 非常好 19）play by ear 随机应变，视情形而定 20） ring a bell 令人想起某件事；听起来耳熟
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