"怎样" means "how" in Engpsh. It can be used to ask about the method or manner in which something is done. For example:
例句1：
中文：你怎样才能学会这个单词？
Engpsh: How can you learn this word?
例句2：
中文：你们怎样解决这个问题的？
Engpsh: How did you solve this problem?
"如何" means "how" in Engpsh as well. It can be used to ask about the manner or method of doing something. For example:
例句1：
中文：你如何解决这个问题的？
Engpsh: How did you solve this problem?
例句2：
中文：你如何解释这个现象？
Engpsh: How do you explain this phenomenon?
"用英语怎么说" means "how to say in Engpsh" in Engpsh. It is used to ask about the correct way to express something in the Engpsh language. For example:
例句1：
中文：这个词用英语怎么说？
Engpsh: How do you say this word in Engpsh?
例句2：
中文：这个汉字用英语怎么说？
Engpsh: How do you say this Chinese character in Engpsh?
These phrases all come from the Chinese language and are used to ask about the way in which something is done or the correct way to express something in a particular language.
例句1：
中文：你怎样才能学会这个单词？
Engpsh: How can you learn this word?
例句2：
中文：你们怎样解决这个问题的？
Engpsh: How did you solve this problem?
"如何" means "how" in Engpsh as well. It can be used to ask about the manner or method of doing something. For example:
例句1：
中文：你如何解决这个问题的？
Engpsh: How did you solve this problem?
例句2：
中文：你如何解释这个现象？
Engpsh: How do you explain this phenomenon?
"用英语怎么说" means "how to say in Engpsh" in Engpsh. It is used to ask about the correct way to express something in the Engpsh language. For example:
例句1：
中文：这个词用英语怎么说？
Engpsh: How do you say this word in Engpsh?
例句2：
中文：这个汉字用英语怎么说？
Engpsh: How do you say this Chinese character in Engpsh?
These phrases all come from the Chinese language and are used to ask about the way in which something is done or the correct way to express something in a particular language.