At last Haruki realives Kazuma's true feelings, but while he's confused at this sudden turn of events he can't hide his joy that the girl he loved best likes him too.
That you don't know anything 
about English grammar.
Dass du von englischer Grammatik 
nicht so viel Ahnung hast.
Que no sabías nada de 
la gramática en inglés.
No tienes ni idea de 
la gramática del inglés.
Il te manque 
les bases en anglais.
Que você não sabe nada 
da gramática inglesa.