We had better hurry -- ----it is getting dark.为什么要填AS

We had better hurry ourselves,or we will miss our train. We had better hurry -- ----it is getting dark.为什么要填AS 请大家帮我英文改错.We had better hurry ourselves,or we’ll miss our train. you'd better hurry.这个句子不懂,是HAD么? 英语翻译We'd better hurry .__________ it will rain. We have no time.You____(have)better hurry up. you had better hurry本句为什么用had?这是什么句型? we 'd better hurry __it is getting darka .and b.but c .as d .unless We'd better hurry.it will rain 我们最好快点好象要下雨 We ( ) wait for him.A.had not better B.had better notC.had not better to D.had better not to we had better send for a card .had better 做什么成分 we had better leave now.(改为否定句)怎么改? We had better keep running every day,_____,______? If it is time ,we had better go.的中文翻译 We can get our lessons better and we feel better too,when we have had plenty of rest. 21.We'd better hurry ______ it is getting dark.A.and B.but C.as D.unless22.I didn' t manage todo it _____ you had explained how.A.until B.unless C.when D.before23._____he comes,we won't be able to go.A.Without B.Unless C.Except D.Even24.I hurried ___ we ( )go home .It's going to rain.A.would rather B.Had rather C.Would better D.had better had better的用法我遇到一个题目是这样的：-we had better leave soon-yes,we_____．答案是better had.为什么答案不是had或者had better?