Following are tips for working with a newcomer in your classroom. Newcomers are students who do not speak any English yet. These students need a very low anxiety environment. All of their attempts at speaking, reading or writing English should be praised and acknowledged.

Visuals and Motions
Use pictures to introduce new or unknown vocabulary and gestures to act out instructions or commands.
Dictionaries
Provide picture and translation dictionaries for students to use.
Buddy Tutor
Pair the student up with a buddy who can help them when needed and work with them on learning basic vocabulary and commands.
Native Language
Let students know thier native language is important too. Allow them to write in the native language in the beginning. As they learn more English vocabulary have them draw a picture, label it, and then write simple sentences in English about their picture.
Questions
Ask questions with one word answers or either/or options. Also accept non-verbal responses such as pointing or acting out.
Modifications
Modify the text to be used by writing a summary or re-writing the text using a lower register (simpler sentences).
Assessments
Use alternative forms of assessment to allow students to demonstrate their learning. For example, writing in their native language about what they've learned, matching pictures to definitions, creating a visual representation, working with a partner or small group, etc.
Be Patient
Newcomers need plenty of wait or think time when asked questions. Students may also go through a silent period when they first arrive, this is normal, don't force them to speak but encourage drawings and gestures as responses.