they went to swim in a lake then.改为同义句.

they went to swim in a lake then.改为同义句. swim in the lake 改为否定句 there is a lake in the park改为同义句 they swim in the lake.人称改为he They went to the park by bus.改为同义句 They went to the park by taxi.(改为同义句) they both went to the party yesterday改为同义句 They went to school by bus.(改为同义句） Mr.Smith went to England in 2001 改为同义句 He stay in Beijing for a short time.改为同义句 He went to Beijing to swim in Kunming Lake is a great pleasure He can swim in the lake 同义