enjoying himself.(改爲同義句) Everyone is（ ）a good ( ).

題目：

enjoying himself.(改爲同義句) Everyone is（ ）a good ( ).

解答：

having , time

再問： 請問爲什麼用 having a good time 呢？
再答： have a good time = enjoy oneself 玩得開心，過得愉快

原句是現在進行時be doing ，故改爲同義句時也要用現在進行時，即 having a good time