请问老师,There used to be beavers all over place是存在句吗?
There used to be beavers all over place, um, somehing like two hunderd million beavers just in the continental United States.
存在句的谓语动词可以是:(1)be (there is, there are, there was, there were, there has been, there have been 等);(2)情态动词 used to/will/may/
can/must + be; (3)be going to be, seem (to be), appear to be, happen to be
(4)某些不及物动词,主要有:live, occur, come, arise, enter, grow, rule, blow等;
(5)be believed to be, be expected to be, be said to be; (6)be stolen, be laid等。(详见《新编英语句型句法全解》pp.634-635)
所以,“There used to be beavers all over the place”是存在句。