初中英语作文修改以下出错的语法和句型Li Hua used to quarrel with others.But now with others,get along very harmoniouslyLi Hua used to litter,now care for the environmentHe was addicted to computer games,Now he actively participated in various activities

1.三个句子都要用连接词but,而且后半句是一般进行时所以动词应该是3人称单数。要加s.
2." get along with "本来就有相处和睦之意，所以 very harmoniously多余
“care for ”是照顾的意思，“care about”为关心
Li Hua used to quarrel with others, but now he gets along with others.
Li Hua used to litter, but now he cares about the environment.
He was addicted to computer games，but now he actively participates in various activities.

第一句话是对的，李华从前喜欢和他人吵架。
第二句，可以改成But now, he gets along with others harmoniously.(注意第三人称单数）
第三句，前半句对，now cares much for the environment.
最后一句，可以用used to be addicted 啊，刚好排比结构。后面的now 必须用一般现在时了，he actively participates in various activities

1,But now with others,get along very harmoniously 改为 but now he gets along very harmoniously with others；
2,now care for the environment 改为 but now he cares for the environment；
3,Now he actively participated in various activities,改为 Now participates in variious activities actively