打开的英语怎么说

打开的英语怎么说：open

1. Can you please open the window? 你能开窗户吗？

2. The store opens at 9am. 商店早上9点开门。

3. I need to open this jar, can you help me? 我需要打开这个罐子，你能帮我吗？

4. The flowers have opened up beautifully in the sun. 花在阳光下美丽地绽放了。

5. The teacher opened the class with a short introduction. 老师以简短的介绍开课了。