1. "最" in Chinese typically indicates the highest degree or maximum extent, equivalent to "most" or "the most" in English. For example, "最高的山" means "the tallest mountain," and "最好的朋友" means "the best friend.".

2. "正在" in English is explained as "currently," "in the process of," or "in the midst of," used to describe an action or state that is currently ongoing.

3. "可以" in English is explained as "can" or "able to," indicating the ability or permission to perform a certain action or activity.

4. "还是" in Chinese has two common usages:

1. When used to indicate choices or comparisons, it is equivalent to "or" in English.
2. When used to express contrast or opposition, it is equivalent to English words such as "still," "yet," or "nevertheless."

5. "要.....了" in Chinese typically indicates that something is about to happen or an action is going to take place, or it signifies that something is about to be completed or finished.