几道高中的英语题目1.I must leave too, I ( ) having tea with you ,BillA was enjoying B am enjoyying C enjoyed D enjoy2.-Did you go to Qingdao for vacation last August-I ( ) to go ,but i got sick at the last minuteA was planning

几道高中的英语题目1.I must leave too, I ( ) having tea with you ,BillA was enjoying B am enjoyying C enjoyed D enjoy2.-Did you go to Qingdao for vacation last August-I ( ) to go ,but i got sick at the last minuteA was planning
几道高中的英语题目
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

几道高中的英语题目1.I must leave too, I ( ) having tea with you ,BillA was enjoying B am enjoyying C enjoyed D enjoy2.-Did you go to Qingdao for vacation last August-I ( ) to go ,but i got sick at the last minuteA was planning
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
2.C
3.I met him at a party, but I haven't seen him since then才对吧……
4.D

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...

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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 一直在做打算，不过最后病了
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？
then常用于过去时;since用于完成时，since+时间点或从句
4.- I think that you need ( C ) practice on playing the violin
-( C ) 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

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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...

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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？

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1.C 由题意，茶已喝过 所以用过去时
2.C 说的是过去的事用过去时··
3.现在完成时的状语 表示自那以后一直到现在都没见过
since then可以用 其中then可以省略
then是过去时或过去进行时或将来时的状语
4.D 由下句可知需要多加练习 第一个空用more
从过去到现在是每两周一次 用现在完成进行时

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1.C 由题意，茶已喝过 所以用过去时
2.C 说的是过去的事用过去时··
3.现在完成时的状语 表示自那以后一直到现在都没见过
since then可以用 其中then可以省略
then是过去时或过去进行时或将来时的状语
4.D 由下句可知需要多加练习 第一个空用more
从过去到现在是每两周一次 用现在完成进行时
表示一直是每两周有一次小提琴课
有答案那咋不说呢·
汗哒哒··
分式方程？ 方程求最值？
你弄错了吧 是分式吧··？方程是不存在最值滴··
分式求最值：通常是分离常数法
具体问题具体分析 你把式子列出来看下呗··

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