几道高中的英语题目

来源：百度知道 编辑：UC知道 时间：2024/06/14 02:59:02
1.I must leave too, I ( ) having tea with you ,Bill
A was enjoying B am enjoyying C enjoyed D enjoy

2.-Did you go to Qingdao for vacation last August
-I ( ) to go ,but i got sick at the last minute
A was planning B had been planning
C planned D have planned

3 -I met him at a party,but i haven't seen him since
为什么then不能用，since是怎么用的？

4.- I think that you need ( ) practice on playing the violin
-( ) violin lessons every two weeks,but I think I'll make it every week from now on
A less; I have B less; I've taking
C more; I have D more;I've been having

分式方程怎么求最大值？
求分析. 我有答案.汗.忘记说了

1 C
2 B
3 since是从此/从这以后，而then只有那时的意思，而这里很明显是想表达从那之后就没再见过他了，所以应该是since.
Since 后面也可以加时间，表示从---之后，如since last Saturday,自从上周六之后
4 D

不知道你的最后一个问题（分式方程怎么求最大值？）是要求翻译成英文还是问数学---希望答案对你有用。

1.C enjoyed
根据句意，茶已饮。故用过去时

2. C planned
根据句意，计划去青岛已是去年的事

3.met him at a party表达是过去的某个时间。但从此（到现在）就没有见过他 。then是表示某个具体的时间（将来的或过去的），是个时间点，故只能用于一般将来时或一般过去时。 而since是“自从。。。”的意思，表达的是个时间段，是完成时态的标志性状语。

4.C more; I have
根据答句，可知问句是建议对方多点练小提琴，故第一空应填more。答句中，有 every two weeks状语，这是一般现在时的标志性短语，告诉我们此句的时态应是一般现在时，故只有填 I have 才是正确表达。

“至于分式方程求最大值”问题 ，个人认为问法有误。方程本身只有“有解”和“无解”之分，并不存在最大值问题。“最大值”应是函数或代数式才有的概念，楼主是要问“分式函数”的最大值问题吗？

以上分析，不知楼主满意否？

1.I must leave too, I ( B ) having tea with you ,Bill
A was enjoying B am enjoyying C enjoyed D enjoy

2.-Did you go to Qingdao for vacation last August.
-I ( B ) to go ,but I got sick at the last minute
A was planning B had been planning 一直在