1．burst vi.爆裂；爆发；突然迸发；冲；闯 n．突然破裂；爆发
[教材原句] In the city, the water pipes in some buildings cracked and burst.
在市内，有些建筑物里的水管出现裂缝并爆裂开来。
(1)burst in/into 闯入；突然破门而入
(2)突然哭起来/笑起来
burst with anger 勃然大怒
单句语法填空
①On hearing the news, Mary burst ________ laughter while Lucy burst out ________(cry)．
②Last night the room ____________(burst) into but nothing was taken away.
[答案] ①into; crying ②was burst
