两句都没有语法错误。第一句是末尾省略了do sth. 第二句是省略了turn前不定式符号to.
这两个地方都是可以省略的。
There are so many people out there who will tell you that you can't do.What you've got to do is turning around and say : " Watch me".
1 can/t可以用could't,并且加相应动词(注意时态)。
2What you've got to do is +that/which+主词+turn around and say : " Watch me".
你的语言表达有些中国话的毛病
有
There are so many people who will tell you that you can't。。。 (你不能干什么,我不清楚你要表达什么。). What you have to do is turning around and saying : " Watch me".