What it means
ている follows the te-form of a verb and usually shows that an action is in progress at a particular time. It can describe something happening now or around the time being discussed. The familiar form ends in ている, while the polite form ends in ています.
Usage note
ている does not always mean an action is happening right now. With some verbs, it describes a continuing state or a result, such as knowing something or a door being open. Context determines the intended meaning.
How to use it
Verb (て-form)います
雨が降っています。
It is raining.
Verb (て-form)いる
雨が降っている。
It is raining.
Example sentences
母は台所で夕食を作っています。
My mother is making dinner in the kitchen.
今、図書館で本を読んでいます。
I am reading a book at the library now.
弟は公園で自転車に乗っています。
My younger brother is riding a bicycle in the park.
妹は部屋で宿題