彼(かの)女(じょ) kanojoを o助(す)け()よ()う() sukeyouとする tosuruわたしの watashino努(ど)力(りょく) doryokuは waすべて subeteまったく mattaku無(む)駄(だ)に()な()る() mudaninaruだろう darouと to思(おも)う() omou。 I think all my efforts to help her will be completely in vain. Literal Her help try my efforts [topic-は] all completely useless become [probably-だろう] [quotative-と] think. ~だろうと思う combines conjecture with personal opinion. すべてまったく無駄になる means 'all become completely useless.' A pessimistic self-assessment. daily life~と思う (I think)~だろう / ~でしょう (probably)
彼(かの)女(じょ) kanojoを o助(す)け()よ()う() sukeyouとする tosuruわたしの watashino努(ど)力(りょく) doryokuは waすべて subeteまったく mattaku無(む)駄(だ)に()な()る() mudaninaruだろう darouと to思(おも)う() omou。 I think all my efforts to help her will be completely in vain. Literal Her help try my efforts [topic-は] all completely useless become [probably-だろう] [quotative-と] think. ~だろうと思う combines conjecture with personal opinion. すべてまったく無駄になる means 'all become completely useless.' A pessimistic self-assessment. daily life~と思う (I think)~だろう / ~でしょう (probably)