5. Put the verbs in brackets in the correct tense, Present Perfect or Past Simple.
They (carry out) a series of experiments this week.
They (introduce) some new methods of investigation lately.
He (publish) a few papers on the problem this year.
We (clarify) this question last week.
Prof. Brown (give) some useful recommendations a few days ago.
There (be) heated discussion at the seminar today.
Dr. Clark (be) in charge of this project for some time now.
Our efforts (be) useless so far.
These studies (be) very intensive until now.
6. Correct the mistakes in the sentences.
How long do you know the chief of the laboratory?
This is the first time I made an oral presentation at a conference.
I study physics for six years.
When have you passed your exam?
I have applied for a new job yesterday.
7. Make up sentences with the Present Perfect Continuous.
Imagine that you are
making the experiment
designing the device
preparing for your examination in physics
examining the system
measuring the reaction rate
studying French
How long have you been doing this?
for a week / a month / a year / a few years?
since early morning / 9 o’clock / afternoon?
for half an hour / for about an hour / for the last two hours?
all the morning / all day long?
8. Change the sentences according to the model.
Example: He was testing the device when I came.
He had been testing the device for an hour when I came.
They were measuring pressure when I came.
We were following the course of the reaction when you phoned.
The machine was running when I left.
I was analyzing the samples when they came into the laboratory.
9. Match the translation with the original sentences. Comment on the use of the tenses.
Он пишет сейчас статью. Он уже написал статью. Он пишет статью в течение двух часов. Он написал статью вчера. На прошлой неделе они провели серию тестов. Сейчас они проводят серию тестов в лаборатории.
На этой неделе они провели серию тестов в лаборатории. Они проводят серию тестов в лаборатории с раннего утра. К концу недели они провели серию тестов в лаборатории. |
He wrote the article yesterday. He is writing an article now. He has already written the article. He has been writing the article for two hours. They have carried out a series of tests in the laboratory this week. They have been carrying out a series of tests in the laboratory since early morning. They are carrying out a series of tests in the laboratory now. They carried out a series of tests last week. They had carried out a series of tests in the laboratory by the end of the week. |
Types of questions
General (Yes/No questions) |
auxiliary (shall/ will, have/ has, had, am/ is/ are, do/ does, did) + subject + predicate Does he hold the same opinion? Do they have any difficulties with the experiment? Did he make a thorough analysis of the data? Has he failed to solve the problem? be (full verb/ link verb) goes in front of the subject Is he at work? Is he good at maths? Was he a talented physicist?
|
Special (Information questions)
|
who(m) when where why + auxiliary + subject + predicate how or which be + subject … whose What research are you engaged in at the moment? Why do you object to this proposal? When did he report these results? Subject questions
+ verb (no inversion) what
Who discovered the atomic nucleus? What regulates the reaction rate? Who will join our research group?
|
Disjunctive (Tag questions) affirmative-negative
Negative-affirmative |
statement + a short question This is the case, isn’t it? There are a lot of challenging problems in physics, aren’t there? They have seminars every week, don’t they? It doesn’t matter, does it? There is no way out, is there? The students don’t know this rule well, do they? |
Alternative (or questions)
|
general question + or … Did he give a detailed description of the results or did he give a general outline of the research? Do they usually hold their meetings on Monday or on Tuesday? |
what
who