both,all,each 当同位语时,都是放在be动词后,实义动词前,第一个助动词后.如:They both went to the country .They are both workers .They must both have got home by now .
both,. all 都是放在BE动词，情态动词之后，实义动词之前
放在Be动词后后边
都放在be动词之前 实义动词之后
均置于be动词后
