5. Pin

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This is the Rachel's English 30-Day Challenge! Learn 30 phrasal verbs in 30 days!

Jumpstart your vocabulary in 2017.

This is Day 4 of your 30-day challenge.

Today, we'll be learning phrasal verbs with " pin" .

When you pin something down, it has nothing to do with pinning something up.

We usually use the phrase 'to pin something down' in the negative:

I can't pin it down.

That means, I can't understand or identify something.

There's something strange about him, but I can't quite pin it down.

I can't quite figure out what is strange about him.

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