is加现在分词是什么时态

以下是小编帮大家整理的is加现在分词是什么时态，本文共7篇，供大家参考借鉴，希望可以帮助到您。本文原稿由网友“Sloth”提供。

篇1：is加现在分词是什么时态

句型分析：

1、一般疑问句是将be动词移到主语前面，句末加问号，读升调。

be+主语+doing sth

Are they putting up the scaffolding? Yes, they are. / No, they aren't.

Is he showing a foreign guest round the city? Yes, he is. / No, he isn't.

2、否定句式是在be动词后加not。

主语+be+not+doing sth

I am not working.

He isn't running on the track.

The students aren't playing football.

篇2：was加现在分词是什么时态

be动词例句：

The man is a science teacher.

这个男子是一位科学教师。

Mary's new dresses are colourful.

玛丽的新衣服色彩鲜艳。

I have been there before.

我以前去过那里。

My mother is in the kitchen now.

我妈妈现在在厨房里。

这四个都是陈述句，可以变成疑问句，方法简单，把主语和“be”或助动词对换位置即可：

Is the man a science teacher?

Are Mary's new dresses colourful?

Have I been there before?

Is mother in the kitchen now?

篇3：was/were加现在分词是什么时态

作系动词：

现在分词、动名词短语作表语：

The film was moving.

His job was teaching English .

过去分词作表语：

We were moved.

不定式作表语：

1）有to不定式：His work that day was to clean the blackboard.

2) 无to 不定式：What he should do is clean the blackboard.

篇4：have加been加过去分词是什么时态

There have been some problems but basically it's a good system.

虽然出现过一些问题，但这基本上仍不失为一个好系统。

His family have been a very positive influence on him.

他的家庭对他有十分良好的`影响。

There have been many changes in recent years.

近几年发生了许多变化。

They have been working on the perfection of the new model.

他们一直在努力完善新型号。

None of this would have been possible without their help.

如果没有他们的协助，这事没有一样能办成。

篇5：was 加过去分词是什么时态

It was a Monday, so she was at home.

那是个星期一，所以她在家。

I was honest about what I was doing.

我对我所做的一切毫不隐瞒。

He was lying—or was he?

他在说谎，还是没有说谎？

篇6：is 加过去分词是什么时态

例句：

1、It is of the same load as a 737 jet.

它的'负载与737喷气式飞机相同。

2、0It is of first importance to spread cultural and scientific knowledge among the people.

普及文化科学是头等重要的。

3、It is of the greatest usefulness.

它是极有用的。

4、It is of convenient length.

它的长度合适。

5、Although longitudinal diffusion is most rapid, it is of practical importance.

虽然纵向扩散速度最快，但其具有重要的现实意义。

篇7：分词的时态

1）与主语动词同时，

hearing the news, he jumped with joy. 听到这一消息，他高兴得手舞足蹈。

arriving there, they found the boy dead. 刚一到那儿，他们就发现那男孩死了。

典型例题

the secretary worked late into the night, ___a long speech for the president.

a. to prepare b. preparing c. prepared d. was preparing

答案b. 此处没有连词，不能选d，否则出现了两个谓语动词worked和was preparing。 只能在b，c中选一个。又因前后两个动作同时发生，且与主语为主动关系，应用现在分词。

2）先于主动词

while walking in the garden，he hurt his leg. 在花园里散步时他伤了腿。

分词作时间状语，如果先与主动词的动作，且强调先后， 要用having done。

having finished his homework, he went out.

=as he had finished his homework, he went out.

做完作业后，他出去了。

典型例题

___ a reply, he decided to write again.

a. not receiving b. receiving not c. not having received d. having not received

答案c. 本题考查分词的时态与分词的否定式。根据题意判断，分词的动作（接信）发生在谓语动词的动作（决心再写信）之前，因此用分词的完成式。分词的否定式的构成为not +分词，故选c。该句可理解为：because he had not received a reply, he decided to write again.

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