gamjaga manhaseo naeireun yangpa, beoseos, danggeuneuro dareun yorireul haryeogo hae.

Since there are a lot of potatoes, tomorrow I’m going to make a different dish with onions, mushrooms, and carrots.

Breakdown of gamjaga manhaseo naeireun yangpa, beoseos, danggeuneuro dareun yorireul haryeogo hae.

• 하다: to do
• ~를: object particle
• 내일: tomorrow
• ~가: subject particle

Questions & Answers about gamjaga manhaseo naeireun yangpa, beoseos, danggeuneuro dareun yorireul haryeogo hae.

What does 많아서 mean here, and why is it used instead of just 많아?

많아서 comes from 많다 (to be many / to be a lot) plus -아서, which often means because or links one clause to the next.

So:

• 감자가 많아서 = because there are a lot of potatoes / since we have a lot of potatoes

Using just 많아 would sound incomplete here if you want to connect it to the next idea. The speaker is explaining the reason for the plan in the second clause.

So the structure is:

• 감자가 많아서 = because there are many potatoes
• 내일은 ... 하려고 해 = tomorrow, I’m planning to make...

In this sentence, -아서 is giving the reason.

Why is 감자 marked with -가 in 감자가 많아서?

In 감자가 많아서, 감자 gets -가 because 많다 commonly takes the thing that exists in large quantity as its subject.

So:

• 감자가 많다 = there are a lot of potatoes / potatoes are plentiful

This is different from English, where we might say I have a lot of potatoes. Korean often expresses this more like potatoes are many.

That is why 감자가 sounds natural here.

What is the role of 내일은? Why is it -은 and not something else?