Would (like), should and could?
Would like: meestal vervangen van want.
I 
want to follow - I 
would like to follow
Do you 
want coffee? - 
Would you like coffee?
Should - have to
You have to contact me. - You should contact me.
You do not have to do this. - You should not do this.
Could - can
Can you help me? - Could you help me?
Soms voor verleden tijd van can; I couldn't find it.