That is a good question. there are many students have this kind of confuse. ok,here give you a golden structure to organize the sentence.
time(which the action occur) .subject .place(which the action occur) .verb .object.
example:A;jin tian(today) wo(i)zai(at) jia (home)kan (read.watch)shu.(book)
today i read a book at home.
But when the place is the terminal.then it is an object.
example:jin tian wo qu(go) shanghai.
ok,you have handful pearls.(a lot of chinese words), Now let’s use a string to make a pearl necklace.