I happened to meet Mr.Smith at the school gate.同意句转换三种

I happened to meet Mr.Smith at the school gate.同意句转换三种
I happened to meet Mr.Smith at the school gate.同意句转换三种

I happened to meet Mr.Smith at the school gate.同意句转换三种
I、【met】Mr.Smith at the school gate【by】【chance】
2、【met】Mr.Smith at the school gate【by】【accident】.
3、I 【came】【across】Mr.Smith at the school gate【occasionally】.
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.