有一读者问这样一个句子：
(1)The first thing I would suggest is that you go visit the States and see things for yourself.
在此句中，go 和 visit 都是动词，为什么能连在一起用呢？
英语中的动词原形（注意一般必须是动词原形）如 go 和 come 等在口语里可后接不带 to 的不定式，再如：
(2)I'm all right. Go look after John.
(3)Come have a glass, and maybe that'll brave you up.
(4)Try knock at the back door if nobody hears at the front door.
