A: My intuition told me that he is bad news.
B: Yes, I never trusted him either.
intuition n. 直觉
A: I am afraid this is the only piece of identification that I have.
B: But it is out of date which makes it invalid.
invalid a. 1. （指法律上）无效的，作废的；2. 无可靠根据的，站不住脚的
A: Your help was invaluable to me, thanks.
B: Don’t mention it, it was my pleasure.
invaluable a. 非常宝贵的，极为贵重的，无价的
A: Invariably the car broke down on the way to my exam.
B: Typical! What did you do?
invariably ad. 不变地，始终如一地，总是
A: I would like to have an inventory of all the furniture in the house before I move in.
B: Certainly, that can be arranged.
inventory n. 详细目录，存货清单
make inventory 清查存货，存货盘存；调查；评价
A: I can’t get the lid off this jar, Mum.
B: Try inverting it and then bang the jar on the floor.
invert vt. 使倒转，使倒置，使颠倒
A: Ironically, I missed the plane even though I was at the airport two hours in advance.
B: I call that unlucky!
ironically ad. 1. 具有讽刺意味地；2. 嘲讽地，挖苦地
A: Do you think Jack is a good comedian?
B: No, he relies too heavily on irony.
irony n. 1. 反语，冷嘲；2. 具有讽刺意味的事，嘲弄
A: Irrespective of the weather, I think we should still go sailing.
B: But what if there is a thunder storm?
irrespective a. (of) 不考虑的，不顾及的
A: Despite the dry weather, I am amazed at how many crops the farmers are growing.
B: That is because they have developed an extensive and efficient irrigation system.
irrigation n. 灌溉
A: My little sister always irritates me.
B: Mine is also very annoying.
irritate vt. 1. 使恼怒，使烦躁；2. 使（身体某部分）不适，使疼痛
A: Is Iran a Christian country?
B: No, it is Islamic.
Islamic a. 伊斯兰教的，伊斯兰教信徒的
A: The isle where we camped was just one hour by boat off shore.
B: Were there any inhabitants on it?
isle n. 小岛，岛
A: I’m itching to travel.
B: Perhaps you can go away following your studies.
itch vi. 1. 痒，发痒；2. 渴望，热望
A: Your necklace is very unusual.
B: That’s because it is made out of ivory.
ivory n. 1. 象牙；2. 象牙色，乳白色
A: I need to cut back the ivy from my windows.
B: Yes, it tends to grow at a rapid rate.
ivy n. 常春藤