He's�not strong enough�to lift that box.

He's�too weak�to lift that box.

1. He isn't old enough to vote.�
��� He is to vote.
2. Algebra is too difficult for me to understand.
��� Algebra isn't for me to understand.
3. I can't drink this tea. It's too cold.
�� It's not .
4. The weather is not warm enough to go swimming.
� � The weather is to go swimming.
5. This book isn't easy enough for the children to read.
� � This book is for the children to read.
6. That shirt is too small for me to wear.
���� That shirt isn't for me to wear.
7. The watch was too expensive for him to buy.
���� The watch wasn't for him to buy.
8. It's not quiet enough in here to speak. Let's go out!
��� It's in here to speak. Let's go out!