相当于【xiāngdāngyú】

相当于 says that A equals B in amount, size or function. B can be a number, a noun, or a verb phrase naming what A amounts to.

With a role or an institution, it says the two do the same job.

With a verb phrase, often after 就, it gives the real effect of an action: "it amounts to".

For "doesn't amount to", the usual choice is 不等于: 有钱不等于幸福.

相当于 or 相当

相当 without 于, before an adjective, means "quite" and has its own point. The 于 is what turns it into "equivalent to".

• × 他一个月的收入相当我半年的收入 → 他一个月的收入相当于我半年的收入
• × 这个房间相当于大 → 这个房间相当大