I should return the book back to the library at once
back去掉,return =give back 所以,return--give也行;
let‘s take turns playing the game
playing---play
take turns to do 輪流做.
he listened carefully but listened nothing
listened---heard
前者表示動(dòng)作,后面表示結(jié)果.
the little boy doesn't be afraid of animals any more
doesn't be------isn't
be afraid of 害怕.
doesn't------shouldn't 也行,小男孩兒不應(yīng)該再害怕動(dòng)物了.
he is enough rich to buy his son a new watch
enough rich---- rich enough
通常要后置.