Copy the sentence in your book and underline the three key words using a ruler and a coloured pencil. Sheep give us meat and wool Birds have wings and feathers. Gorillas and chimpanzees are kinds of apes. The thigh bone is called the femur. The knee bone is called the patella.
Rainfall is measured with a rain gauge.
Do the same again with these sentences, but you must decide how many key words are in the sentences. The skull is a kind of bony box which protects your brain. Swans and ducks are toe birds that have webbed feet. The little baby gurgled happily as she played in the sandpit. The referee stopped the game because the player had hurt his ankle.