"Sie essen manche Äpfel."

Translation: They eat some apples.

[nandogore]

What difference between einige and manche?

[Nuttie]

The only difference which I found by now is, that if you would like to say "some of.." you have to use "manche", e.g.:
You just cannot work together with some of the colleagues ->
Mit manchen Kollegen kann man einfach nicht zusammen arbeiten.
But I'm not native, so maybe there is some other difference.

[radami1]

I really do not understand why this could not be "many apples".

[rsalden]

Many apples would be "viele Äpfel". "Manche" is less than "viel".

[Bernardsia]

how do i know whether this is past or present tense?

[wataya]

past tense would be 'Sie aßen manche Äpfel'