interjection
啊

ah
啊,我明白了。
Ah, I understand.
HSK 2 builds your foundation in Mandarin Chinese. At this level you can communicate about familiar daily topics — family, shopping, time, and weather. You will encounter around 300 essential characters and learn to combine them into practical expressions.
Chinese is built from components — learn radicals and you will start recognizing patterns across characters. Practice writing alongside flashcards; muscle memory reinforces character recognition. Pay close attention to tones in the audio; a wrong tone changes meaning completely.
Basic measure words (个, 本, 杯), time expressions and word order, 了 for completed actions, 在 for ongoing actions, comparison with 比, directional complements.