Change the sentences into the Past and Future Indefinite :
1. We can help you. 2. I can do this work myself. 3. Ann can’t carry that suitcase because it’s too heavy. 4. She can translate this article into English. 5. I can show you the way to the park. 6. They can’t answer your question.

We could help you. We will help you.I could do this work myself. I will do this work myself.Ann couldn't carry that suitcase because it was too heavy. Ann won't carry that suitcase because it will be too heavy.She could translate this article into English. She will translate this article into English.I could show you the way to the park. I will show the way to the park.They couldn't answer your question. They won't answer you question.