初三英语句子分析Ming sat under the tree,chatting with his friends ,请

1 ：to do形式作状语只能表示目的.
2：分词作状语逗号一般都需要使用.
我再解释下分词作状语
分词就包括两个：现在分词和过去分词.
Having had a quarrel with his wife,he left home in a bad temper.（Having had a quarrel with his wife现在分词作状语有很多功能,这句是伴随功能）
Inhibited in one direction,it now seems that the Mississippi is about to take another.（Inhibited in one direction 过去分词作状语,表示被动）
3：考点就是考你状语的一些应用.
如果看不太明白,证明你语法真的不太好,建议你去百科里面查查 状语.