[Connective Endings] -길래(기에) vs. -ㄴ데/는데

There are several connective endings that link two clauses in the relation of a reason and result, cause and effect, and the basis and following action.

 

-길래(기에) and -ㄴ데/는데 are two of them, and I'd like to show you the difference between them.

 

When using -길래(-기에), the full sentence just expresses a simple fact. The type of sentence is usually a declarative one.

 

• 비가 많이 오길래 그냥 집에 있었어. It rained a lot, so I just stayed at home.
• (그를) 오랜만에 만났길래 커피나 한 잔 했어. It's been a while since I met him, so I had a cup of coffee with him.

 

 

In case of -ㄴ데/는데, the following clause includes a request, suggestion, or order.

 

• 비가 많이 오는데 그냥 집에 있지 않을래? It rains a lot, so why don't we just stay at home?
• 오랜만에 만났는데 커피나 한 잔 하시죠. It's been a while, so why don't we have a cup of coffee?

 

You can find out that the first clause is the reason for the following suggestion.

 

To sum it up:

	-길래(-기에)	-ㄴ데/-는데
relationship between two clauses	reason and result, cause and effect, or a basis and its following action
the type of the second sentence	usually declarative	usually request or order