He began to learn English when he was four years old(同义句) He

He began to learn English when he was four years old(同义句) He 改为同义句：He began to learn english when he was six years old. he began ro learn English when he was six years old.改为同义句 同义句转换;He could speak English when he was four years old He _ 同义句转换.1 When he was seven years old,he began to go to school When he was five years old he began to play the violin 同义句 He started to learn English when he was 12 years old.(保持原句意思 改同义句：He began to play the piano when he was 5 years old.He b He began to learn Chinese(when he was 5 years old)对括号部分提问__ He could speak English when he was four years old. He started swimming when he was four years old .(同义句) He sta Did he study English when he was four years old?改为肯定句