【拓展】let alone也可以表示以上意思,除此之外,还表示“更不用说”。如: The baby can’t even walk, let alone run. 5. on the air 在广播中,被广播。如: We will be on the air in five minutes. 我们将在五分钟后开始广播。 【辨析】in the air 在空中;在传播中;悬而未决的; in the open air 在户外,在露天。如: He will make a speech on the air this evening. 今天晚上他将在广播中演讲。 Some kites are flying in the air. 一些风筝在空中飞舞。 There’s a rumor in the air that he is going to resign. 谣传他即将辞职。 Their plan is still in the air. 他们的计划尚未确定。 He will hold his birthday party in the open air. 他将在户外举办他的生日聚会。 |