Meaning：Relax and enjoy oneself

Sentences：

Eat, drink and be merry, Christmas comes but once a year, so let yourself go.

The evening was really a great success, everyone let themselves go.

I love to dance and just let myself go. Let yourself go, John. Learn to enjoy.

When I was depressed, I let myself go and was really a mess.

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Meaning:

to discipline oneself after going through a difficult time.

Synonyms:
get a grip on get over it, buck up(informal),

Sentences：
He’s finding it hard to pull himself together after the accident.
I’ll have to pull yourself together if you want to pass that exam.
He pulled himself together and got back to work.
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Meaning:
I am confused (by so much that is happening)

Sentences：
I don’t know whether I’m coming or going.
I’ve got so many problems and so much work to do that I just don’t know if I’m coming or going.
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Meaning:
to write a short letter or notice to contact someone

Synonyms:
drop a letter/call
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Meaning:
I don’t understand what he is trying to say. It all sounds mad to me

Synonyms:
I am not sure what he/she is on about
What are you on about?

Sentences：
Couldn’t understand what he was on about.
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Meaning:
think carefully before you do anything which uncertain

Synonyms:
Look twice before you leap.

Sentences：
It is important to look before you leap.
I’m not saying you shouldn’t sign the lease for that apartment. I’m just saying you should look before you leap.
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Meaning:
someone who puts his nose into other people’s business or private lives.

Synonyms:
usybody, meddler

Sentences：
He’s a real old nosey parker, always putting his nose into other people’s business.
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Meaning:
Be careful what one does or says

Synonyms:
You have to watch your step
You’d better watch your step

Sentences：

You’ll have to watch your step or you’ll find yourself in great difficulty.
You have to watch your step when you do business with people you know nothing about
He’s in a bad mood, so watch your step and don’t say anything wrong!
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Meaning：
to be very determined in stopping something

Synonyms：
Take a firm stand, Assert something strongly

Sentences：

My dad puts his foot down when it comes to my bedtime.

She put her foot down and changed the name of the company.

I finally put my foot down and demanded to talk to someone in charge.
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Meaning：
exactly what is needed
‘just the job’ is an expression that we use to describe something that is exactly what we need at a particular moment, for example, an ice cream may be just the job on a hot day, but not in the middle of winter.

Sentences：
I looked until I finally found something that was just the job for repairing the table.
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