Possible for a teacher to teach without combining English with mother tongue (first language)....?

in my opinion, it is not possible for a teacher to teach English without combining English with mother tongue (first language). Because, it will allow students to understand what is meant. Although, he is teaching with the English language. But he would always add the main language on the sidelines saying.
Because sometimes there are language or terms that are difficult to understand by students and there is no equivalent in English. Such as the names of traditional foods and certain sayings.

For Example, in English classes. Sometimes the lecture combine an Indonesia language in his subject when he explains. It is intended for students who do not quite understand what is explained in English, can understand.
A similar thing happened to a teacher who teaches English in children and kindergarten.
They combine English language with the mother tongue because the child is still difficult to absorb the words in the English language.

Native Speaker or English Teachers?? second Assigment MOT

In my opinion is better taught by English teachers than Native speaker. Because with English teacher we can better understand not only the composition and grammar but also more focused and structured. To be taught by English teachers we're also better to understand because the teacher uses a particular method. Whereas Native speakers only help us in the process of practicing what we have learned and understand how the pronunciation. Especially the Native speakers are not being taken a language education program.
By English teachers we will be taught Reading, Listening well, Speaking, and Writing. where the fourth aspect is the most important thing in learned a language, including English. And one way that we can speak English fluently is be master in Speaking.
Therefore is better taught English by English teachers than after that we practice with native speakers. So, the science that we get will not be futile.
Because the fact is, if we want to speak fluently we have to start the cycle of learning by listening first, then try to talk ( Speaking ) and we will continue on Reading and Writing.