A Thai Grammar Mistake to Avoid: Two Question Words

One question word at a time

Thai builds questions with small marker words: mai (ไหม) turns a sentence into a yes or no question, while a-rai (อะไร) means what. The mistake many learners make is stacking two of them in a single question, which sounds wrong to Thai ears.

So you would not glue mai and a-rai onto the same sentence. You pick the one that matches what you actually want: mai for a yes or no answer, a-rai when you want to know what something is.

Getting this straight makes your questions land cleanly in Phuket markets, taxis and cafes. This short Thai reel shows the wrong version and the fix side by side so the rule sticks.