突然哭起来 burst into tears ; burst out crying ; bursting to tears ; break into tears

突然哭出声来 burst into laughter

突然哭/笑起来 burst into tears/laughter ; burst out crying/laughing

突然哭了 burst into tears

突然哭了起来 bursting into tears

想突然哭了 would like to cry suddenly

突然大哭 burst into tears ; burst out crying ; break into tears ; burst into tears burst out crying

突然大哭/大笑 burst into tears/laughters ; burst out crying/laughing ; burst into tears/ laughter

突然大哭起来 break out in tears ; burst into tears