speak English—
1. know and be able to use the language:
- She asked if the other two women spoke English, and Miss Savage told her that one was a German-Swiss.
2. use English in conversation:
- As I spoke English, she concluded I was a foreign teacher come on business connected with the Pensionnat.
speak in English—
1. give a formal speech using English:
- Just a decade ago, Russian officials rarely spoke in English at international conferences.
2. use English on a particular occasion:
- Then to my surprise he spoke in English—good English, with the chi-chi accent of the Indian.