Is It Possible Teaching Foreign Language (English) Without The Use of Mother Tongue?

Is it possible teaching foreign language (English) without the use of mother tongue??
Everything is possible. But I think it must be hard and difficult at the beginning. Just like a mother teach a language to her children. Word for word and sentence by sentence. At the beginning the words or sentences that we spoken are unfamiliar, and the students didn’t understand the meaning. Of course we need a lot of demonstration. Little by little, just like we learn our mother tongue and speak it, over time the students will recognize the words and understand the meaning.