「・・・できません」と言いたいときは、動作を表す単語(動詞)の前に「can't」をつけます。
1. I can't go.
2. I can't cook lunch.
3. I can't read a book.
4. I can't make a cake.
5. I can't swim.
6. I can't use a knife and fork.
7. I can't speak English.
8. I can't play the piano.
できたかな?