Read to your students often, and have them read to themselves. They should be reading a lot of simple, predictable books. Books that focus on one subject and provide a detail about that subject on each page are useful. For instance, a book about turtles may say on the first page, "Turtles have hard shells." On the second page it might say, "Some turtles are pets." These books provide an example for students to follow.
Start with simple, predictable sentences. Sentences that start with "I like," "I can," and "I am" are easy for most students to pick up. They build up a rhythm and can write several sentences with this structure.
Provide your students with writing booklets. Allow them to choose their own subjects. Explain that each page should have a sentence and a picture. Some students will find it easier to draw their pictures first and then write their sentences.
Encourage your students to share their writing. Create publishing parties where students will read their books to their classmates. Ask the students to ask questions or provide positive comments to the author.