直到我看到蒂娜独自坐在黑暗处,我才意识到她不高兴
Not until I saw Tina sit alone in the dark did I realize that she was unhappyonlywhenI sawTinasitinthedarkalone____I____ shewasunhappyonlywhenI sawTinasitinthedarkalonedidIrealize shewasunhappy