其实是的英文：
as it did ;as it they were ;as it was ;as they did

参考例句：

The minivan was actually born at ford
微型货车其实是在福特汽车公司诞生的。

we love in vain narcissistic so shallow.
我们的所爱是如此的徒然无用,其实是自我陶醉和如此的浅薄!

He remained neutral on the surface, but actually he was looking on coldly.
他表面上保持中立，其实是在坐观成败。

Beneath its surface glitter, the fashion industry is a tough place to work in.
时装业表面上光彩迷人，但其实是个辛苦的行业。

He came to see me on/under the pretext of asking my advice when he really wanted to borrow money.
他以请我指教为藉口前来看我,其实是想借钱.

The supposed beggar was really a police officer in disguise.
那个众人眼中的乞丐，其实是化了装的警察。

Properly implemented, encryption can be virtually impenetrable
加密技术如果使用得当，其实是很难破解的。

"Unhappy families are really similar to one another - there's much more variability among happy families."
"不幸的家庭其实是彼此相似的，而幸福的家庭才各不相同"。

Few people know that it really is the Angel of Christian Charity.
很少有人知道它其实是代表着“基督博爱之神”。

I realized that the buzz I had thought was a singing in my ear was really a medley of voices.
我意识到我刚才以为是耳鸣的嗡嗡声，其实是混杂的说话声。

did是什么意思：
v. [do] 的过去式形式；做

What we did we did for the best.
我们所做的一切都是出于好意。

We did an hour of gym.
我们做了一小时的体操。

Did they get spliced?
他们结婚了吗？

they是什么意思：
pron. 他们；她们；它们
were是什么意思：
v. be (are) 的过去式；be 的虚拟语气形式

You were at the scene!
你当时就在现场！

Were you a bunny?
你曾经做过兔女郎？