we finished all of the food at a sitting . the underlined part means a. at one time b.in time c.on time d.at a time请教老师 这一题 答案是a 但我选d为什么不行? at a time 一次 逐次的意思不是更准确嘛?at one time 也有这个意思 但还有曾经的...
...”之类的意义,便不能用作存在句的谓语动词试比较:
There appeared I emerged ship after ship from afar
x The disappeared I went down ship after ship inthe distance
There blew a gale.
x There subsided a gale.
我想问下在存在句的意义是什么,谓语动词必须...