Answer:
1.“I can’t do this on my own!” he said. - He said he could not do it on his own.
2.“Would you like some tea?” she asked me. - She asked me if I would like some tea.
3.“I have travelled to many countries”, he told me. - He told me he had travelled to many countries.
4.“I’ll call a taxi when I finish writing this email”, he said. - He said he would call a taxi when he finished writing the email.
5.“Why didn’t you come to the party?” she asked him. - She asked him why he hadn’t come to the party.
6.“I’m going to see the new James Bond film”, he told me. - He told me he was going to see the new James Bond film.
Explanation:
When reporting sentences, we must pay attention to the following:
1. The subject of the reported sentence will change according to the context. For instance, in sentence 2 above, the subject is the same as the person reporting the sentence. However, in sentence 5, the subject is "he", the person who asked the question is "she", and the person reporting or the current speaker is "me".
2. We usually change the verb tense to the past of what was used in the original sentence. For instance, simple present to simple past, present perfect to past perfect, will to would, etc. Notice that in sentence 2, "would" did not need to change.
3. When we report a question, we must not maintain the interrogative structure. Therefore, we make the necessary changes, such as suppressing auxiliaries or simply moving them. Take a look at sentence 5.