状语是啥?

不是。是in London.
I go to school by bike. by bike 是方式状语
I was born in China. in China是地点状语
I was born in 1993. in 1993 是时间状语
I didn't go to school yesterday because I was ill. because I was ill 是原因状语从句
We plant trees to protect our environment. to protect our environment作目的状语 为了……
If it doesn't rain tomorrow,we will have a picnic. If it doesn't rain tomorrow是条件状语从句
Although it's raining,the farmers are still working in the field. Although it's raining 是让步状语从句。
当然，以上我列举的还不全，这些是比较常见的。你最好买本语法书看详细的。状语包括很多，还有伴随状语什么的。努力哦！

不是 in 是介词

状语应该是in London
E.G.

He was in that car.
in that car就是修饰这个人的位置，就是状语

状语：修饰动词、形容词、副词或整个句子用的；通常由副词、介词短语、动词不定式、分词或从句担任。例：he runs fast。（fast是）。至于你说的那个，应该不是。
注：其实，这些英语各种词的专业解释，英汉字典上都有，你去看看。

He lives in London. in London就是状语。介词+时间，地方的一般都是状语。

上这个网：借词短语作方式状语是啥意思 状语是修饰什么的，状语从句是修饰什么的 伴随状语和方式状语是同一概念吗 地点只能做状语吗 而且是地点状语？ 英语时间状语、地点状语通常排列顺序是？？ 状语是怎样的一种成分？ 怎么判断一句话中哪些是状语？？ 什么是表语，什么又是状语？ 怎样确定一个成分是状语 是作”宾语”，还是作”状语”？