user2582 07/27 8654
1）If I shop online ,I save time.
2) If the mall is closed,you can shop online.
二）If +动词原形..,..will/might/be going to +动词原形..表达将来或预期的真实情况
1）If we study hard,we will/might speak English very well.
2) If you fell lucky,you're going to expect good things.
1）If he had more money now,he would take a trip around the world.(事实上他没有去旅游）
2）If I had a chance to change my life,I would become a younger lady.
3). If she were* rich ,she would live Shanghai .（事实上她没有住在上海）
4) If I were you ,I would have a meal outside.(多用于提换位思考性建议）
** wish +过去式，表达想要，但不是真实的
1)I wish I were a fish .
2)I wish I could speak English very well.
四）If had +过去分词...，would have +过去分词。表达对过去的虚拟（有时表的对过去的后悔等）
1）If I had won a million dollars,I would have traveled around the world，
2）If I had studied English hard,I would have been able to communicate with
3) if I had been free ,I would have gone to the movies with you.
**wish +had + 过去分词也表达后悔
I wish I had visited the famous museum!