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all at once与all of a sudden有何区别

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/15 11:14:46
all at once与all of a sudden有何区别
能够举例给与说明吗?
all at once和all of a sudden均有“突然”的意思,不过前者还有同时的意思.
如:When I asked a question,he put up his hand all at once.
(我一提问,她立刻就举起手)
When I asked a question,she shouted all of a sudden.
(当我提问时,她突然喊了起来)