到底 HSK Level3 Grammar

HSK Level3 Grammar

到底　　

■Meaning：on the earth(emphasis)
How to make：…到底＋

■Example sentence (audio)

请问你到底谁?
Who are you?

 到底是什麼？
what is it exactly?

到底是因为你是我好朋友。
After all, you are my wife.