一、时态不一样
1、seems是seem第三人称单数，用于语言中对对话双方外其它某一个人指示时使用的代词。
例句：He seems to have had a way with foreigners.
他似乎天生就善于和外国人交往。
2、seemed是seem过去式，表示过去某个时间里发生的动作或状态。
例：He seemed to be in direct contact with the Boss.
他似乎直接和老板联系。
二、读法不一样
1、seems
英 [siːmz] 美 [siːmz]
2、seemed
英 [siːmd] 美 [siːmd]
三、词汇搭配不一样
1、seems
Seems in 而行色
seems as 似乎 ; 似乎是因为
Seems calm 显得镇静
2、seemed
Seemed Friendly 看似友好
That Seemed 这也
Seemed far 好像很远