Question

How to use the particles 吗 (ma) and 呢 (ne) in Chinese grammar?

Answer 1

thats easy 吗 is used to question others like

我说的对吗？am I right?

再吗？ are you here[online]?

应该怎么办呢 ？what shall i do?

you cannot remove 吗in interrogative sentence because it will come out like this:我说的对. means I am right.

再. i am here[online]

which makes your sentence no more questioning.

but many times you could just ignore 呢which wont trouble the sentence that much, 应该怎么办?

which there is no problem in asking questions like this.