在给定的一篇英文文章中识别出所有的冠词 (a, an, the)，并将它们标出来。
"The quick brown fox jumps over the lazy dog. A red apple hangs from a tree. An umbrella is useful on rainy days. The cat chased a mouse. The sun is shining."
The quick brown fox jumps over the lazy dog. A red apple hangs from a tree. An umbrella is useful on rainy days. The cat chased a mouse. The sun is shining. 

There are 5 articles in this passage: "the" is used 2 times and "a" is used 3 times. "An" is only used once.