“信以为真”常见的英文表达是 “take sth. as true” 或 “believe sth. to be true”，也可表述为 “accept sth. as true” 。
take sth. as true：
这是一个较为简洁且常用的表达。例如：He took her story as true.（他信以为真，相信了她所说的故事。）
believe sth. to be true：
强调主观上认为某事是真实的。例如：Many people believed the rumor to be true.（很多人信以为真，相信了这个谣言。）
accept sth. as true：
“accept”有“接受；认可”的意思，此表达侧重于从心理上接受某事为真实。例如：She accepted his excuse as true without further questioning.（她没有进一步询问就信以为真，接受了他的借口。）