I am come form China 是什么意思

I am come form China 是什么意思 I am form China.(同义句转换) i come from china i后面还加am吗 I am Leo come from China.I am Leo from China.哪个正确? you,he and I [are/is/come/am] from china I come from China和 I am from China意思一样吗 帮我判断一下这两句那一句对?（1）I am form China（2）I is form China i just come back form I come from china.可以说I am from china.为什么这里不加be动词am了? I am not in form I am lihua,come from China.该句中come为何不用现在分词形式 I come form Canada.对 还是I comes form Canada. I come from China.的同义句是?试卷上我写了I am from China.不对 I hope to come to China.同义句 I am __ __ __ __to China.大哥大姐们, How( )you come to china?I( )to china ( )air.（ ）you on your way( yes ,I am.请完形填空. where do you come from?a I come from school.b.I am from china.选哪个? I am come back. you,he and I [are/is/come/am] from china.应该选啥?就近原则?