Understand the main uses of ～ています.
The rule
The て + いる form can describe an ongoing action or a resulting state depending on the verb. The context is important.
Examples
いまほんをよんでいます。
I'm reading a book.
けっこんしています。
I'm married.
Remember
- ～ている does not always mean "being in the process of": some verbs refer to a resulting state.
- Understand the main uses of ～ています.
Common mistake
Automatically translate けっこんしています by "I'm getting married".