How to say he should have worked harder. in Japanese
1)
あいつはもっとno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb熱心熱心(nesshin) (adj-na,n) zeal/enthusiasmにに(ni) (prt) indicates such things as location of person or thing, location of short-term action, etc.頑張るno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbべき(aux) should/must/that one ought to/to be done/-ableだった wasのにのに(noni) (prt) although/when/and yet/despite this/in spite of/even though/but even so/but even then/however/nevertheless/for all that/notwithstanding that/while/if only/i wish/i tell you/you should do/in order to。。(。) Japanese period "."
