1
You have been waiting here for two hours.
2
You are not going to have been waiting for more than two hours when her plane finally arrives.
3
Had you been waiting there for more than two hours when she finally arrived?
8
Used to express the idea that an action is repeated or usual. The action can be a habit, a hobby, a daily event, a scheduled event or something that often happens. It can also be something a person often forgets or usually does not do.
10
It has two different forms in English: \"will\" and \"be going to.\"
12
Used to express the idea that an action started and finished at a specific time in the past. Sometimes, the speaker may not actually mention the specific time, but they do have one specific time in mind.
