Question

I __________ (tell) you about my plan, but you stopped me be

Answer 1

should have told

我本想告诉你我的计划,但我还没说就被你打断了.

问题补充：

should have done ,是虚拟语气,表示本要怎么做而没做.

这里可能没有这个意思.

用was about to tell 表示过去正要做某事

be about to do sth ,正要做某事或者正打算做某事.

我正要告诉你我的计划就被你阻止了.