Grammar JLPT Level N5 - Lesson 13

Structure of ～ている ②:

Verb［て］+ いる
Verb［て］+ る^(*)

^(*) The い can be omitted in casual language.

Details about ～ている ②:

As mentioned in our first ている lesson, this construction is used to convey that someone or something is existing in a constant state of 'doing' the verb that comes before て. Here we will take a closer look at several of the verbs that will be used with ている, to express 'existing in a state of (A) having been done'.

クラスは始(はじ)まっている。
The class has already started. (Existing in the state of having started)
お母(かあ)さんは今(いま)買(か)い物(もの)に行(い)っています。
My mom went out to go shopping. (Existing in the state of having gone)
あの犬(いぬ)は死(し)んでいるだろう、悲(かな)しいね。
That dog over there is probably dead… How upsetting. (Existing in the state of having died)
先生(せんせい)がめちゃ怒(おこ)っている。
My teacher is very angry. (Existing in the state of having gotten angry)

All of these verbs would appear as the past form in English, after the initial thing has 'started', 'come', 'died', or 'gotten angry'. However, this is not the case in Japanese. In Japanese, once something is angry, it exists in the state of being angry, once something has started, it exists in the state of being ongoing, once something dies, it exists in the state of being dead, and so on.