Animals that are used to perform are easy to get tired.
If we reduce this to its most basic grammar, we get:
- Animals are easy.
Obviously that’s not what the writer intended. Maybe we should look at some examples!
- My answer was pretty easy to understand.
= My answer was easy.
- The daily instructions are very easy to follow.
= The daily instructions are easy.
- The game is really pretty easy to play.
= The game is easy.
Now contrast the previous examples with the following.
- Generally it is easier for men to handle horses.
= Handling horses is easy (NOT men are easy!)
- It is easy for smartphone users to use QR codes.
= Using QR codes is easy (NOT smartphone users are easy!)
- It is easy for people to misunderstand religious language and ritual.
= Misunderstanding is easy (NOT people are easy!)
It is easy for us to correct our opening example if we begin “It is easy for.!”
- It is easy for animals that are used to perform to get tired.
[it is easy/difficult for + noun + to + v1]
An alternative improvement would be to use an adverb:
- Animals that are used to perform get tired easily.
..and for a higher IELTS score, avoid ‘get’ by using the verb form of ‘tired’:
- Animals that are used to perform tire easily.
If you’re studying in Australia you should make an effort to see the amazing Circus OZ – an animal-free circus!