他晃了晃头，表示不同意。
tā huǎngle huǎng tóu ， biǎoshì bù tóngyì 。
He shook his head to express disagreement.
地震时，房子晃动得很厉害。
dìzhèn shí ， fángzǐ huǎng dòng déhěn lìhài 。
During the earthquake, the house shook violently.
他一边跑一边晃手。
tā yībiān pǎo yībiān huǎng shǒu 。
He shook his hands while running.