Well, dear child, "English Gothic Architecture" is a fancy way of talking about a type of building design that was popular in England a really long time ago, from about 1180 to 1520. It's called "Gothic" because people at the time thought it looked like something from the ancient Goths, who lived in Europe a long time ago.
Now, the main thing you need to know about it is that it's big and fancy. These buildings are really tall with lots of pointy shapes on the roof, walls, and windows. They often have really pretty arches that are kind of like a rainbow, and buildings like churches had really tall towers that you could see from far away.
The people who made these buildings wanted everyone to feel tiny and amazed so they made every part of the building look really grand and detailed. They also used lots of different materials, like rock and glass, to make the building extra special.
The buildings were also used for special purposes. Many of the buildings were churches, so they had to be really big and impressive to fit all the people who came to worship inside. Sometimes, they would also be used for important events, like weddings or coronations.
So, in a nutshell, English Gothic architecture is the fancy, tall, and detailed building style of a really long time ago. It's like a big, pretty fairy tale castle but in real life!