this may have been close to the truth这个have been后面为什么加close原型啊?什么情况?at that time,this may have been close to the truth,

this may have been close to the truth这个have been后面为什么加close原型啊?什么情况?at that time,this may have been close to the truth,
this may have been close to the truth这个have been后面为什么加close原型啊?什么情况?
at that time,this may have been close to the truth,

this may have been close to the truth这个have been后面为什么加close原型啊?什么情况?at that time,this may have been close to the truth,
close有两种含义,一种是“关闭”,是动词；另一种是“接近的”,是形容词.
这里的close是做形容词“接近的”的,所以可以不变形直接加载have been后面.

close在这里是接近的意思
副词 ad.
1.接近,靠近地[(+to)]

接近的，这个很可能接近事实。

这里的colse是形容词：接近的
be close to是固定词组