一连
解説
“一连”表示动作或状态连续不断、持续进行，强调时间上的连续性，常与时间段连用。
“一连” is an adverb meaning 'continuously' or 'in succession,' emphasizing the continuous nature of an action or state over time, often used with a time period.
例文
这场大雨一连下了十多天，也就把工人们困在这里十多天。
The heavy rain fell continuously for over ten days, which also trapped the workers here for over ten days.
他上了床，在一连三天三夜没睡好以后终于能舒舒服服地睡上一觉了。
He went to bed, and after not sleeping well for three consecutive days and nights, he could finally get a comfortable sleep.
関連文法
不由得HSK 7七—九025
词类 · 方式副词
表示因某种情境而不由自主地产生某种反应或情感，强调动作或情感的自然流露，无法控制。
Indicates an involuntary reaction or emotion triggered by a specific situation, emphasizing an uncontrollable, natural response.
例文 (2)
看着父亲粗糙的手，我不由得流下了眼泪。
Looking at my father's rough hands, I couldn't help but shed tears.
看着毕业照，我不由得开始回忆起往事。
Looking at the graduation photo, I couldn't help but start recalling the past.
顺便HSK 7七-九026
词类 · 方式副词
“顺便”是方式副词，表示在做某事的过程中，附带做另一件相关或不相关的事情，强调动作的顺带性。
'顺便' is an adverb of manner that indicates doing another task incidentally while doing something else, emphasizing the incidental nature of the action.
例文 (2)
去老师办公室的时候，他顺便把我的作业也交了。
When he went to the teacher's office, he also handed in my homework on the way.
我到了上海，顺便去看望了小学老师。
When I arrived in Shanghai, I also visited my elementary school teacher on the way.