以“if”开头的句子通常表示条件、假设或者可能性的情况,以下是一些例子:
1. If it rains, we will cancel the picnic.
(如果下雨,我们将取消野餐。)
2. If you study hard, you will pass the exam.
(如果你努力学习,你将通过考试。)
3. If I had known about the meeting, I would have attended.
(如果我知道有会议,我会参加的。)
4. If you go to the store, could you buy some milk?
(如果你去商店,你能买些牛奶吗?)
5. If she comes, we will have a party.
(如果她来,我们将举办一个派对。)