[课文原句感知]
①Will, still watching, saw the cat behave curiously.
②When it had gone past he crossed the road, keeping his eyes on the spot where the cat had been investigating.
③While sitting by a pool, Ferdinand sees a frog.
④Before leaving his kingdom, he calls his son to him.
⑤Not knowing her address, I can't write to her to express my gratitude.
⑥Having lived with the girl for 5 years, we all know her very well.
