确实是的英文：
it is true that

参考例句：

"Andy is really a soldier of fortune,."
安迪确实是个冒险家

Lanny is really a lady-killer.
兰尼确实是个色狼

Their installation proved a laborious undertaking
要来安顿这些人，确实是一件麻烦的事情。

Their installation proved a laborious undertaking.
要来安顿这些人，确实是一件麻烦的事情。

Mitigating factors notwithstanding, the outburst by the teacher shows an undeniable lack of professionalism on her part
事实上，该教师的情绪失控，不管如何申辩，确实是代表了一种专业操守上的缺位。

“when I’m in Guangzhou, you’ll always find me at the White Swan. The White Swan really is the one to stay in Guangzhou.”
“每次到广州，您都会在白天鹅宾馆找到我，白天鹅宾馆确实是在广州值得下榻的地方。”

It was in truth a miracle.
这确实是个奇迹.

This computer is up-to-date, indeed!
这台电脑确实是新式的。

In fact the adjective is becoming a real necessity on occasion.
事实上，这个形容词有时确实是必不可少的。

smith's sprint at the finish was really wonderful
史密斯的终点冲刺确实是了不起。

true是什么意思：
adj. 合乎事实的；确实的；真正的；忠实的
adv. 真实地；不偏不斜地
n. 真，真实

That was a true victory.
这是个真正的胜利。

In a sense, it is true.
在某种意义上说，这是正确的。

True power and true politeness are above vanity.——Voltaire
真正有权力和真正有礼貌的，都不虚荣。——伏尔泰

The converse is not necessarily true.
反过来就不一定正确。

The rumor proved true.
这谣传结果是真的。