Unit 12: Robots

- home robots will be able to do all of our housework 

- teaching robots will be able to help children do their homework

- worker robots will be able to build houses in the air 

- doctor robot will be able to help sick people 

- space robots will be able to build space stations on many other planets 

- robots will be able to do dangerous work for us 

First, the home robot will be able to do all of our housework. They can cook, do laundry, iron clothes or water the plants. Second, teaching robots will be able to help kids with their homework. They will have data on different subjects and be able to teach our child. Third, robots will be able to do jobs that are dangerous for us. They can work in the oror mines under the sea.

viết lại thì hiện tại hoàn thành và quá khứ đơn

1.I HAVE NEVER BEEN TO THE BALLET BEFORE

->It is the first time I HAVE BEEN TO THE BALLET

2.John and Mary moved to Edinburgh twenty years ago

-> It is twenty years since John and Mary last moved to Edinburgh

3.The police started looking for him two months ago

->for two months now the police has been looking for him

4.I have never seen a dirtier -looking dog

->this is the first time I have seen a dirtier -looking dog

5.Mary rang hour and hours ago

->it is hours since Mary last rang

6.it is ages since Alan visited his parents

->Alan hasn't visited his parents for ages

7.she started to learn Enghlish 8 years ago

->it is 8 years since she last started to learn Enghlish

8.I have never seen such a beutiful building

->it is the most beutiful building I have ever seen

9.I have never read such a romantie story

->this is the most romantie story I have ever read

10.they had never had such a cold winter

->it was the coldest winter they had ever had

11.you will never meet anyone more dangerous than Mrs Jones

->Mr jones is the most dangerous person you will ever meet

12.Man has never had such efficient servants as computer

->computer is the most efficient servants as computer Man has ever had

bài tập viết lại thì hiện tại hoàn thành và quá khứ đơn

1.this is the first time i have seen this film

->i have never seen this film before

2.when did you have it?

->how long have you had it ?

3.this is the first time I had such a delicious meal

->I haven't had such a delicious meal

4.he last shaved the day before yesterday

->he hasn't shaved since the day before yesterday

5.I last drank chamagne at may brother's wedding

->I haven't drunk champagne since my brother's wedding

6.it's 2 years since I was last in Rome

->I haven't been in Rome for 2 years

7.I saw Tom last on his wedding day

->I haven't seen Tom since his wedding day

In future, when robots can be used both in homes and in other areas, it could improve the standard of living of people. House hold chores took significant cut in humans' life. Many people burn their energy on their day to day tasks like cooking, cleaning etc after coming from work. When robots can complete such jobs, people can spend more time with their family and friends. Experts say that many major problems in the modern world are caused due to miscommunication. When people get more time, they can talk freely and resolve such issues and eventually create happy society.

Robots can be used on certain jobs to curb accidents due to negligent behaviour of some people. When robots are used on such work, it does not cause any human life due to accidents at the work places. Human resource can be efficiently used by involving humans to perform those tasks which demand human skills like critical thinking, problem solving etc while robots can be used on low end jobs like moving cargos, heavy weights lifting etc.

While some people talk about how robots can be useful to human, others voice their concerns like demotion in human values and creation of lazy society due to heavy dependency on robots. When robots become cheaper to produce, employers may prefer to use more robots than humans. As the technology constantly improves the capabilities of robots, it could undermine the values of humans.

Many people may rely on robots heavily. Some may even develop a habit of using robots on tasks that they can easily do. This could create lazy society. Humans could start to cherish robots at the expense of human lives.

In conclusion, robots can be used on anything which can eventually improve humans' standard of living but definitely not at the expense of human lives. Robots can be used to help humans to live in harmony and to form happy societies. This fundamental setup should not be allowed to deteriorate by robots.

viết lại câu thì hiện tại hoàn thành và quá khứ đơn

1.he hasn't laughed so much for ages

->it is ages since he last laughed

2. I haven't enjoyed my self so much for years

->it is years since I enjoyed my self so much

3.the telephone rang for hours

->it is hours since the telephone rang

4.I haven't seen him for ages

->it is ages since I last saw him

5.ly 's father started to stop smoking last year

->ly's father has stopped smoking since last year

6.the editor hasn't written to Mai for a month

->the editor last wrote to Mai a month ago

7.how long have you learned spanish?

->how long ago did you start to learn spanish ?

viết lại câu thì hiện tại hoàn thành và quá khứ đơn

1.he hasn't laughed so much for ages

->it is ages since he last laughed so much

2. I haven't enjoyed my self so much for years

->it is years since I last enjoyed my self so much

3.the telephone rang for hours

->it is hours since the telephone last rang

4.I haven't seen him for ages

->it is ages since I last saw him

5.ly 's father started to stop smoking last year

->ly's father has stopped smoking since last year

6.the editor hasn't written to Mai for a month

->the editor last wrote to Mai a month ago

7.how long have you learned spanish?

->how long ago did you start to learn spanish?

1.It is ages since he last laughed.

2. It is years since I enjoyed my self so much.

3. It is hours since the telephone rang.

4. It is ages since I last saw him.

5. Ly's father has stopped smoking since last year.

6. The editor last wrote to Mai a month ago.

7. How long ago did you start to learn Spanish?

viet lai cau thi hien tai hoan thanh va qua khu don

1.I haven't played football since 2000

->the last time I played football was in 2000

2.I haven't been to HCM city for 2 years

->the last time I went to HCM city was 2 years ago

3.I've never met such a famous person before

->it is the first time I've ever met such a famous person