今日短語:be obliged to.
不得不…… (to之後接動詞原形);感激某人(to後面接名詞)
例句:Because of the heavy rain, we were obliged to stay at home.由於下大雨,我們不得不留在家裏。We are very much obliged to you for your help.我們非常感激你的幫助。
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