only if表示"只有";if only则表示"如果……就好了"。If only也可用于陈述语气。来源:考试大 I wake up only if the alarm clock rings. 只有闹钟响了,我才会醒。 If only the alarm clock had rung. 当时闹钟响了,就好了。来源:考试大 If only he comes early. 但愿他早点回来。
下一篇:全国公共英语考试语法——Itis(high)timethat
It is (high) time that 后面的从句谓语动词要用过去式或用should加动词原形,但should不可省略。来源:考试大 It is time that the children went to bed.来源:考试大 It is high time that the children should go to bed.