- •Министерство образования и науки Российской Федерации Казанский государственный технический университет им. А.Н.Туполева
- •Английский язык
- •Lesson 1 Sequence of Tenses (Согласование времен)
- •Ex.2 Put the verbs in brackets into the Past Indefinite or the Past Perfect Tense.
- •The Passive Voice Страдательный залог
- •History Part I.
- •Part II.
- •Modern electronics
- •Exercises to the texts:
- •Listening and speaking.
- •Task 3. Check your answers to Task 3 with the help of the text and diagrams.
- •Task 4. Label each step in this flowchart with the correct letter from the list. The first one is done for you.
- •Task 5. Read the text below, then look at these statements. Are they true or false? You may need to use your own knowledge as well as information from the text.
- •Lesson 2 Reported Speech (Косвенная речь)
- •Exercises:
- •Reported Questions (Вопросы в косвенной речи).
- •Reported Commands and Requests Приказания и просьбы в косвенной речи
- •Alfred nobel - a man of contrasts.
- •Notes to the text.
- •Listening and speaking.
- •Task 4. Read this advice on 'Mixing down'. Listen again to Part 2. Then note the points in this text which are additional to those given on the tape.
- •Lesson 3. Conditional Sentences (Условные предложения)
- •Союзы, вводящие условные предложения.
- •Exercises:
- •What is an electric current?
- •Notes on the text
- •Words to be learnt.
- •Carbon dioxide emission
- •Listening and Speaking.
- •Course Guide
- •Information Technology
- •Lesson 4. The Participle.
- •Forms of the Participle II
- •Functions and translation
- •Complex Object with the Participle /сложное дополнение/
- •Complex Subject with the Participle.
- •Absolute Participle Construction /Независимый причастный оборот/.
- •Особенности перевода
- •Holographic technique helps in testing and research.
- •Words to be learnt
- •Listening and speaking.
- •Gerundial Object
- •Indefinite Gerund Passive (being written)
- •Сравнение герундия и причастия.
- •Exercises:
- •Sources of power
- •Notes on the Text:
- •Words to be learnt:
- •Revision
- •Listening and speaking
- •Lesson 6 The Infinitive
- •Формы инфинитива
- •Functions
- •Complex Object with the Infinitive.
- •It consists of two elements.
- •Complex Subject with the Infinitive
- •Grammar exercises
- •Ex.2 Translate the phrases with the Infinitive.
- •Ex.3 Grammar review.
- •Translate and define the functions of the infinitive.
- •Vocabulary to be learnt:
- •Ex. 3 Define the meanings of the phrases with international words.
- •Revision
- •Listening and speaking
- •Search reading
- •Read yourself
- •A new pedestrian crossing strategy
- •Viruses
- •2. Decide whether the following statements are true (t) or false (f) in relation to the information in the text. If you feel a statement is false, change it to make it true.
- •Database management systems
- •1. Review questions:
- •2. Translate the international words without a dictionary.
- •1. Review questions:
- •2. Translate the international words without a dictionary:
- •3. Define what parts of speech these words are and translate them:
- •Transistors and semiconductors
- •1. Review questions:
- •2. Translate the international words without a dictionary:
- •3. Explain what meanings prefixes and suffixes give to the following words and translate the words:
- •Amplifiers
- •1. Review questions:
- •2. Make up an abstract of the text basing on the answers to the above questions.
- •3. Define to what parts of speech these words belong and translate them:
- •Check yourself
- •Variant I Computers in our life
- •Grammar test
- •Variant II
- •Virtual worlds
- •Grammar test
- •Appendix 1
- •Appendix 2
- •Irreqular verbs
- •Appendix 3 Чтение дробных и смешанных величин
- •Словообразование (Word Formation) Суффиксы
- •Приставки
- •Derivatives
- •Synonyms
- •Opposites correct – wrong; continue – interrupt; free – bound; presence – absence; remain – leave; begin – complete, finish safe – dangerous
- •Vocabulary
- •Литература
Task 4. Label each step in this flowchart with the correct letter from the list. The first one is done for you.
a Magnetic field around the object
b AC voltage in the search coil
с Electric current in the metal object
d Induced voltage in the search coil
e Note heard in headset
f Magnetic field around the coil
Reading. Linking what you read with what you know.
Not everything in a text is clearly stated. When reading, we have to make links what we read and what we already know about the subject.
Read this brief text and try to answer this question:
Can metal detectors be used to trace water pipes under a street?
Metal detectors can find buried metal. They were developed for military purposes to locate hidden explosives. They operate on the principle of electromagnetic induction.
To answer the question, you have to link knowledge from the text and knowledge of your own.
From the text we know:
Metal detectors can find buried metal.
From your own knowledge you know:
Most water pipes are metal. They are buried under streets.
The more knowledge we have about our subject and about the world in general, the easier it is to learn new things when we read.
Task 5. Read the text below, then look at these statements. Are they true or false? You may need to use your own knowledge as well as information from the text.
1 Any metal detector can discriminate between gold and other metals.
2 Gold necklaces are found quite often.
3 The search coil is connected directly to a battery.
4 Metal detectors require a changing magnetic field.
5 The metal detector can only locate metals which contain iron or are magnetic.
6 Metal detectors are only used by treasure hunters.
7 Passing a current through the search coil and then switching it off, creates a pulse of magnetism round the coil.
8 All metal detectors are fitted with a flashing light to show when an object has been found.
9 Large objects are easier to find than small objects.
10 A coin horizontal to the surface is more difficult to detect than one vertical to the surface.
Text
A metal detector is essential for today's amateur treasure hunter. But only the most expensive detector can reveal the difference between worthless items, such as pull-ring tops from soft drink cans or silver foil, and a rare find such as the gold necklace discovered by one enthusiast last year.
Electronic metal detectors use the principle of electromagnetic induction. This means that, if an object is placed in a changing magnetic field, an electrical voltage is created in the object. In a metal detector, an electrical current is passed through a coil of wire, called the search coil, to create a magnetic field. An alternating current (AC) generator converts the direct current (DC) from the battery into the AC needed to drive the coil. As AC regularly reverses direction, it produces the necessary ever-changing magnetic field.
Currents are created in a metal object which comes within this magnetic field by a process known as induction. This is because all metals conduct electricity. When a current is induced in a metal object (for example, a buried coin), this in turn produces its own magnetic fields. These magnetic fields are capable of inducing a small amount of electricity in the detector's search coil itself.
The simplest kind of metal detector is the pulse induction type. A powerful current is passed from the battery through the search coil and then switched off. The pulse of magnetism causes current to flow in any target objects below the ground. But unlike the current in the search coil, the current in the object cannot be switched off; it has to die away naturally. As it dies, the current in the object reactivates the search coil. This voltage is then amplified to indicate with a sound or a flashing light that an object has been found.
The effectiveness of a metal detector depends on the size and position of the object and how far beneath the ground it is buried. For example, a coin buried edge-on to the search coil is much harder to detect than the same coin buried face up.
Task 6. Copy out unknown words and translate them.