Learn the child's name as quickly as possible. If you don't know how to ask the child's name in his native language, point to yourself and clearly say your name. Then, point to the child and ask his name. You will need to repeat this procedure several times, but eventually the child will catch on and tell you his name. Clearly using his name in conversation is the best way to keep his attention and communicate with him.
Make use of visual props, facial expressions and common gestures when communicating with the child. This will help him associate familiar concepts with the corresponding English words.
Speak clearly and enunciate properly when talking to the child. Don't use slang or colloquialisms. These will confuse him and hinder his ability to learn the language.
Come up with a list of essential words that the child should know. You might try words such as "hungry," "bathroom," "help," "please," "thank you" and "you're welcome." Make flash cards with pictures of these places, feelings and concepts with the English word written on them. The child can then begin to associate the images with the corresponding English words.
Attempt to include the child in all classroom activities. An integrated child will have more success adapting to his environment and developing the necessary language skills to communicate with his peers.
Assign a "buddy" to the student. This will be one of his English speaking classmates. During each class activity, have the buddy explain to the student, in English, what he should be doing. This will help create bonds with his peers and give him an opportunity to learn an appropriate vocabulary for his age.