三加四等于几用英语怎么说

What's three plus four?（三加四等于几？）
Three plus four equals seven.（3+4=7）

建议你去用在线英语翻译，LS的答案几乎都是在那找出来的- -，

在百度查网站；在线翻译

做完几个简单的按钮就会有；

What's three and four?

How much is three plus four?

或者What's three plus four?

回答则是：It's seven.

What's three plus four?
Three plus four equals seven.

what is three plus four?

How much is three plus four?