The cat is under the table.
I can understand what you must be going through.
Sir, I'm having difficulty understanding the math.
Sir, I'm having difficulty understanding the topic.
Sir, I'm having difficulty understanding the class.
This type of attitude is common among the under 25s.
Sir, I'm having difficulty understanding the subject.
I understand that we can’t do that, but can we discuss some other options?
I understand that we can’t do that, but can we discuss some other alternatives?
I am currently doing my undergraduate programme in Economics at Dhaka University.
I understand what you’re saying, but our final adjustment is very clear on this one.