雅思(1) 一是表示将来，即表示发生在谓语动作之后的动作。如：We decided to leave early. 我们决定早点动身。He asked me to buy him some paper. 他叫我给他买些纸。We expect him to come in time. 我们希望他能及时来。(2) 表示与谓语动作同时发生或略先于谓语动作的动作。如：He seems to be tire
