"He likes the girl."

Translation: Er mag das Mädchen.

[dudeta]

why is Madchen not feminine

[gewisse]

Normally you would expect a word meaning 'girl' to be feminine, like 'Mann' is masculine, 'Frau' is feminine etc. But Mädchen is a diminutive (i.e. with an ending that means little) - in German diminutives (usually -chen or -lein) are always neuter. So 'die Frau' (woman) but 'das Fräulein' (young woman) and 'das Mädchen'

[Levi]

Finally a proper, DETAILED explanation ! Many thanks

[Germandy]

Also: "Er mag die Mädchen" would mean "He likes the girls".

[LeviEspana]

Er liebt das Madchen why not good?

[Germandy]

"er liebt" = "he loves", but to like is much weaker in meaning than to love.