Let me help you clear away the tea things (= cups, plates, etc. that are used for having tea).
the real thing真事;真品，非赝品
The fire alarm goes off accidentally so often that when it's the real thing (= when it really does happen) nobody will take any notice.
a thing or two
She thinks she knows everything about raising children, but I could tell her a thing or two (= some information she does not know).
a close/near thing
The car just missed the child but it was a very close thing.
the thing is
The thing is, my parents like me to be home by ten o'clock.
Can you pass me that thingy - you know, that clip thing for holding papers together.
the done thing
Don't forget to shake hands - it's the done thing, you know.
and another thing
And another thing, why didn't you tell me you were going out?
all things being equal
All things being equal, I'll be at home on Tuesday.
for one thing
"Why won't you come to New York with me?" "For one thing, I don't like flying, and for another, I can't afford it."