is做系动词还是助动词

Her dream is to be a teacher. 由于be to do也表示将来，所以这里的is如何理解？构成将来时的助动词还是仅仅为系动词？

这是否定转移吗（I dont work normal hours every day）

I dont work normal hours every day. My hours and days are different every week.

enjoy可以用于进行时态吗

It’s good to have a different focus. People have been bringing theirchildren in to see the hens and residents come and sit outside to watch them.I’m enjoying the creative activities,and it feels great...

imagine have... 的have是作什么作用?

Imagine have the police intercept your plans to rob a bank.请问,这个句子中多出来的have是做什么用的? 如题

a series of waves作主语谓语动词用单数还是复数

take turns后接不定式还是现在分词

牛津高中英语模三p9有这样一句话：The other group members could take turns narrating and holding the pictures. 另外一组的成员可以轮流叙述和举画。句中的take turns后面接的是现在分词，但我的笔记上有take tu...

phonetic system什么意思

这里的phonetic system什么意思？音系？written script什么意思？如何理解？如何怎么翻译了？

of-短语作定语时的修饰对象判断

You’ll need several pieces of string of different lengths.of different lengths修饰string 还是pieces of string？如题

新概念3-10： to abandon ship 同位语还是后置定语

The order to abandon ship was given and hundreds of people plunged into the icy water.

More than 50 years可以用作主语吗

More than 50 years has passed since the end of the Second World War,but this is the greatest disaster in human history.

many times 是时间做状语成分吗

You see them many times decorated with red envelopes and messages of good fortune.

especially 前面为什么没有连词

I love all my friends, especially you. 请问，especially是副词强调you. 但是 为什么句子没有连词呢？ 还是说这是进行了省略 如 I like all my friends, and especially I like you.辛苦解释一下。如题

on?discussion与under?discussion的区别

on discussion 和 under discussion 都可表示“在讨论中”，都是固定搭配（都用介词on且都不用冠词）。请问它们有区别吗？如题

It was three years since we had been there 怎么理解

您好!

定语从句中什么情况下不能将介词置于句末

语法书上讲到：

句中两个with短语做什么成分

With the mass production of pencils, they are getting drastically more popular in many countries with each passing decade.句中的with the mass production of pencils 是看做原因状语吗 ?句中的with each pa...