“在……呢”表示动作正在进行 "在……呢" Used to Indicate an Action in Progress

动词前边加上副词“在”，或者句末用语气助词“呢”表示动作正在进行。例如：
An action in progress can be expressed by adding the adverb "在" before a verb or by using the modal particle "呢" at the end of a sentence. For example:

“没（在）+动词/动词词组”表示否定，句尾不能用“呢”。例如：
The negative form is "没（在）+Verb/Verb Phrase", without "呢" at the end of the sentence. For example:

“在”也是介词，后边加上表示位置的词语，用于介绍动作行为发生的位置。例如：
"在" can also act as a preposition, used before a word of locality to introduce the place where an action or behavior takes place. For example: