They are enjoying themselves now.这句话的意思和每个单词的意思然后改为同义句说明理由

They他们 are 助动词enjoying喜欢 themselves 他们自己now　现在。句子意思是：　他们现在正玩得很开心。

另外：are enjoying 现在进行时
同义句：They are having a good/ great / wonderful time now .
或
They are having fun now .

注：enjoy oneself = have a good/ great / wonderful time = have fun 　玩得开心，过得愉快。

【enjoy onself】玩的开心
这句话的意思：他们现在都玩得很开心。

同义句：【They are having a good time now.】
知识点：【enjoy oneself】=【have a good time】

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他们现在玩的很开心（字面意思是他们很享受自己）
they：他们
are enjoying：享受（现在进行时be+doing）
themselves：他们自己（反身代词）
now：现在
They are having fun now或They are having a good time now.
have fun和enjoy oneself和have a good time是同义词组，做题目经常会碰到的

they are having a good time now 他们现在玩得很嗨皮

他们现在感到非常愉快