他的行为举止合乎礼仪。用英语怎么说？

他的行为举止合乎礼仪。

He behaved himself decently.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

behaved

v. （行为或举止）表现( behave的过去式和过去分词 )，工作，（使）守规矩；

例句
I was so badly behaved I was convinced she would be glad to see the back of me.
我的表现如此差劲，相信她会很高兴看到我离开。

himself

pron. （反身代词）他自己，（用以加强语气）他亲自，他本人；

例句
He pleaded guilty before a court martial to absenting himself without leave.
在军事法庭上他对自己擅离职守表示服罪。

decently

adv. 合适地，体面地，像样地，有礼貌地；

例句
The new servant was decently dressed.
新来的佣人衣着得体。