もう〜ている

About

～ている verbs can have a so-called "lingering effect", where their action has already been completed, but the results are still in effect.

When ～ている form verbs are combined with もう, they are described as having already been started.

E.g. 食たべている "eating" / もう食たべている "already eating"

Summary

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  ～ている verbs can have a "lingering effect"

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  もう can be used with ている verbs to describe them as "already happening"