们 men is a placed after a pronoun to form a plural. For instance, if 他 tā he is followed by 们 men , it becomes 他们 tāmen they. If 你 nĭ you is followed by 们 men it becomes 你们 nĭmen you (pl) and if 我 wǒ I is followed by 们 men , it becomes 我们 wǒmen we.