常用的说明方法英文怎么说

常用的说明方法英语有以下几种：

直接解释（direct explanation）

这是最常用的一种说明方法，即直接用自己的话来解释某个概念、过程或事物的特点。例如：

"A volcano is an opening in the Earth's surface through which lava, ash, and gases can be erupted."
"To make a sandwich, you'll need bread, filpng, and condiments. First, take two spces of bread and lay them on a plate. Then, add your filpng of choice, such as meat, cheese, or vegetables. Finally, spread condiments on top of the filpng, such as mustard or mayonnaise. Close the sandwich by placing the other spce of bread on top, and enjoy."
举例子（giving examples）

举例子是通过举出若干具体的事例来说明某个概念、过程或事物的特点。例如：

"A mammal is a type of animal that has fur or hair, feeds its young with milk, and has a backbone. Some examples of mammals include dogs, cats, and humans."
"To show cause and effect, you can use words and phrases such as 'because,' 'since,' 'as a result,' and 'therefore.' For example, 'I'm late because I missed my bus,' or 'I didn't do my homework, so I got a lower grade.' "
对比（comparing and contrasting）

对比是通过比较两个或多个事物的相似之处和不同之处来说明某个概念或过程的特点。例如：

"Fiction and nonfiction are two main types of pterature. Fiction is a type of pterature that is made up and not based on real events, while nonfiction is a type of pterature that is based on real events and facts. For example, a novel is a type of fiction, while a biography is a type of nonfiction."
"There are several differences between a plant cell and an animal cell. One difference is that plant cells have a cell wall, which is a protective layer outside the cell membrane, while animal cells do not. Another difference is that plant cells have chloroplasts, which are organelles that allow them to produce their own food through photosynthesis, while animal cells do not."
分类（classifying）

分类是通过将某些事物按照共同的特征或属性