Question

请教一个英语问题

I didn't concern myself with politics这句话中的concern是不是要加ed？跟excited一样是形容词用法吗，那这句I was concerned that I was not protected and would get a sunburn为什么要加ed，是形容词用法还是被动用法？

Answer 1

第一个句子不用加ed, 因为这里concern 是动词，前面有否定didn't ,concern应该用动词原形。
后面那个句子是固定搭配，be concerned with, 对什么感到焦虑、担心。可以把这里的concerned 理解成动词的ed形式形容词化，这类词一般是表示情感类的动词。
注：concern的属性有动词也有名词。

Answer 2

I didn't concern myself with politics这句话中的concern是及物动词，后面有宾，不能变。
I was concerned that I was not protected and would get a sunburn这个才是和excited的形容词用法。

Answer 3

I didn't concern myself with politics，这句里面呢，Concern是作动词用的，因为前面是did。举例，I didn't take the book，我没有带那本书，这里的Take就是动词。
I was concerned that I was not protected and would get a sunburn。这里的意思是，我担心自己没有被保护到，会被太阳晒伤。形容词用法，担心的，焦虑的，跟Worried的意思差不多。

Answer 4

...didnt concern....这里的 concern是及物动词，本应用过去式concerned但前面是助动词didnt所以concern用原型不用加ed。
而.....was concerned.....这里concern是被动语态故应用过去分词concerned。

Answer 5

didn't+动词原形，concern作为动词，应该用原型
下一句I was concerned…我担心我没有得到保护，会被晒伤,concerned为形容词 担心的