as planned的用法

That didn't go as planned.

这里的as是连词吗？是否是省略了it is, 即as it is planned.

That didn't go as planned.正确

That didn't go as was/had been planned. 正确

That didn't go as it was/had been planned that it should. 正确

That didn't go as it was/had been planned. 错误

it为形式主语，that从句为真正主语。形式主语 it 和that从句要么同时省略，要么同时保留。省略that从句却保留形式主语it为语法错误。it 和 that从句省略后，动词be可以省略，也可以不省略。

曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2021-04-22 14:55

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黎反修 - 英语翻译（已退休） 2021-04-22 08:01

擅长：数词用法,存在句,英语考试

是的。《牛津英语用法指南》第四版275.11节对此用法有介绍：

某些连词的后面，尤其在正式文体，主格代词和与之连用的 be 的各种形式可以省略。

...I’m enclosing the signed contract, as agreed. 根据约定，兹附上已签字的合同。