studybuddykor:

So I put up a passive suffixes table last week, and here’s the causative suffixes table to go with it. Like I said, although I frequently cannot pull these out of my brain fast enough when speaking, being able to recognize them when listening or reading is sooo helpful.

Causative is used when A causes/makes/lets/enables/permits/gets/has B (to) do something. Here’s an example:
ACTIVE: 미아가 웃었어요. (Mia laughed.)
CAUSATIVE: 내가 미아를 웃겼어요. (I made Mia laugh.)

So just like with passive, a few things happen when a sentence becomes causative.

• A new subject (who causes the action) is introduced. (내가 미아를 웃겼어요.)
• When there’s no object involved (intransitive verbs), the original subject becomes the object of the sentence. (미아가 —> 미아를) When there is an object already (transitive verbs), the object stays the same and the original subject gets one of these particles to show that it’s receiving the action: 한테, 에게, or 께 (in order of increasing politeness). You can see a bunch of these examples below.
• The verb changes to its causative form. (웃었어요 —> 웃겼어요)

Also like passive, there are a few ways to make the causative form, and I want to focus mainly on the suffixes, but:

• Verb stem + 게 하다. This works for all verbs, but not all verbs are commonly made causative with this construction.
  인부들이 길을 넓게 했다.
  The workers widened the road. (made the road get wider)

  친구들이 나를 못 자게 했어요. 
  My friends didn’t let me sleep.

• Action verb stem + 도록 하다. Same as above, but only works with action verbs.
  선생님께서 학생들에게 청소를 하도록 했다.
  The teacher made the students clean.

• 하다 verbs become 시키다.
  남동생한테 심부름을 시켰다.
  I made my younger brother run errands.

OKAY, yay, now finally, the last way to change verbs is by using the suffixes 이/히/리/기/우/구/추:

• The suffixes 이/히/리/기/우/구/추 can be attached to some (not all) verbs (but for the verbs that they can be attached to, this is the most common way to make these verbs causative).
  알다 (to know) —> 알리다 (to let someone know)
  도착시간을 알려 주세요.
  Let me know what time you’ll arrive.

  벗다 (to take off clothes) —> 벗기다 (to undress someone)
  제가 아기 신발을 벗겼어요.
  I took off the baby’s shoes.

There are spelling rules as to which verbs take which suffix, but because there are sooooooo many exceptions, it’s best just to learn them one by one. But this chart has a bunch of common ones, which should be a pretty good start!