Hello! A conditional clause is when for something to happen (or to have happened), something else has to happen (or to have happened). So I agree that the sentence is a statement made in the past tense. I hope that helps!

It is not a conditional. It is a simple statement of what he did in the past, in his childhood. He played tennis during his childhood

Part A - He played tennis when he was a child. He played tennis [main clause] when he was a child [adverbial clause - answers the question "When did he play?"] This is not a conditional. It is simply a statement about a past action. ------- Part B - He will play tennis when the good summer weather arrives. This is not a conditional. It is simply a statement about a future action. ------ Part C - Examples of conditionals: Type 0 - general truth or repeated action He plays tennis on Saturday mornings if [when/whenever/each time] the weather is good. Type 1 - real present/future condition and result He will play tennis this Saturday if the weather is good. [It is rainy today, but maybe Saturday will be nice.] Type 2 - unreal present/future conditional and result. He would play tennis this Saturday if the weather was good. [It is rainy today and the weather is expected to stay rainy until Monday.] Type 3 - unreal past conditional and result He would have played tennis last Saturday if the weather had been good. [It was rainy last Saturday.]

Thank you.

It's not a conditional - it's third-person singular past tense. Most conditionals use "if" in the sentence, but "when" can be in a conditional. For example, "when he turns 50, he will learn to play tennis." Conditionals require a condition or hypothetical situation and a result. An adult won't start playing tennis when they are younger unless they travel in a TARDIS. OK, I'm a Whovian, a time-traveling "Doctor Who" fan. Note that the spelling is "tennis."