い-adj -い / な-adj + がる
shows signs of feeling ~
〜がる describes outward signs of a feeling, especially someone else's: 寒がっている means they show signs of feeling cold. For your own immediate sensation, you normally say 寒い. The pattern also works with 欲しい → 欲しがる and 嬉しい → 嬉しがる. It is not a blanket ban on other ways to describe someone else's feelings: you can report what they said or infer how they feel, and narration may state a feeling directly.
子供が新しい自転車を欲しがっています。
こどもが あたらしい じてんしゃを ほしがって います。
My child wants a new bicycle.
妹は犬を怖がります。
いもうとは いぬを こわがります。
My little sister is scared of dogs.
Which pattern is each sentence using?
子供が新しい自転車を欲しがっています。
My child wants a new bicycle.
妹は犬を怖がります。
My little sister is scared of dogs.