Andyouwouldthinkyourlastnameactuallybeingfoster.You'dbesomewhatequippedtobeafosterparent.特别是句中would的用法和意思,

Question

And you would think your last name actually being foster.You'd be somewhat equipped to be a foster parent.特别是句中would的用法和意思,

Answer 1

would 是情态动词,在此代替 will 语气委婉.
因为说话人或作者在表示 you 在某种情形下就会有的想法,但will 则很肯定,或者说有些武断,让人听了不舒服.
And you would think...你就会这么认为……
And you will think...你一定会这么认为……（那也不一定啊!）