非谓语动词被动形式
1.不定式一般式的被动语态。由“to be+过去分词”构成。如：
She asked to be given some work to do. 她要求给她一些工作做。
He was the last person to be asked to speak. 他是最后被邀请发言的人。
2. 不定式完成式的被动语态。由“to have been+过去分词”构成。如：
I should like to have been told the result earlier. 我本想让人把结果早点告诉我的。
3. 现在分词一般式的被动语态。由“being+过去分词”构成。如：
I saw him being taken away. 我看见有人把他带走了。
Being protected by a wall, he felt quite safe. 有墙作保护，他感到很安全。
4. 现在分词完成式的被动语态。由“having been+过去分词”构成。如：
Having been invited to speak, I’ll start making preparations tomorrow. 因为邀请我去讲话，我明天就得做准备。
The subject having been opened，he had to go on with it. 话题已经开始了不得不谈下去。
5.动名词一般式的被动语态。由“being+过去分词”构成。如：
She likes being looked at. 她喜欢被人瞧。
He hates being made a fool of. 他讨厌被别人愚弄。
This question is far from being settled. 这个问题远没解决。
6. 动名词完成式的被动语态。由“having been+过去分词”构成。如：
Jenny’s not having been trained as a dancer is her one regret. 杰妮没受过舞蹈的专业训练是她感到遗憾的事。
After having been instructed to drive out of town, I began to acquire confidence. 在接到把车开出城的指令后，我开始信心十足了。