present Tom always say"I love cat" Tom always says he loves cat past Tom said :“I love cat” Tom said he loved cat

Indirect speech is essentially explaining what someone said without using quotation marks. I told him, "I'm going for a walk today!" <---- Direct speech I told him that I was going for a walk today. <---- Indirect speech He shouts, "I need you to get me a hammer!" <---- Direct speech He shouts that he needs someone to get him a hammer. <---- Indirect speech There are many different structures to an indirect sentence, so I can't exactly give you examples of all of them here. Basically, drop the quotes, add a "that" where the comma would normally go (if you want to; this isn't necessary, but it sounds more intelligent), and then change the tense as necessary, and you've got an indirect sentence. As for Ming's response, while he got the concept down properly, I must be honest and say that his grammar was quite inaccurate, and I suggest that you do not mimic those sentences as he wrote them.