まだ～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 まだ, they are described as "still happening".

E.g. 食たべている "eating" / まだ食たべている "still eating"

If the ている verb is negative, まだ can also indicate "Has not yet...".

E.g. まだ食たべていない "has not yet eaten"

Summary

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  ～ている verbs can have a "lingering effect"

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  まだ can be used with ている verbs to describe them as "still happening"