Yes, I can speak English. In English, we would say "Can you speak English?" The phrase "Can you speak English?" is a way of asking someone if they are able to communicate using the English language. It is a common way of asking someone if they are able to speak English in everyday conversation. Here are some example sentences and their translations:

"Can you speak English?" (你会说英语吗?)

"Do you know how to speak English?" (你会说英语吗?)

"I can speak English fluently." (我会流利地说英语。)

The phrase "Can you speak English?" comes from the verb "to speak," which means "to communicate using words or language." It is a common way of asking someone about their language abilities in English.