In Year 1 the children are required to write in sentences, as you know. But their sentences should now be developing in complexity. The children are required to be able to use descriptions in their writing, as detailed in the national curriculum
" use sentences with different forms: expanded noun phrases to describe and specify [for example, the blue butterfly] "
So we are currently encouraging the children to use adjectives in their writing about a fictional marine dinosaur, called Dolly the dolichorhynchops.