Work in pairs. Complete the table below

1.4. Translate the sentences and mind the form of the Infinitive after "must" and "may".

Example:

He must be hungry after his long walk. Он, должно быть, голоден...

He must have been hungry after his long walk yesterday. Он, должно быть, был голоден...

1. This term must be a confusing one, it has several meanings.

2. He must have attempted to make his description concise and accurate, but failed.

3. These instructions must have been executed simultaneously.

4. There must be some incompatibility of the results since he has not adjusted the installation properly.

5. There must have been a slight ambiguity in your explanation, that's why you were asked so many questions.

Example:

He may arrive any moment.

Он может появиться... (Он, вероятно появится...)

He may have arrived already, let's go and find out. Он, вероятно, появился...

1. Your suggestion may be very advantageous but it will hardly be accepted.

2. I am not saying: "You were mistaken."' I am saying: "You may have been mistaken."

3. This similarity is of interest for it may provide an alternative characteristic of the system.

4. Numerous auxiliary means may have been available at that time.

5. The electrical conductivity in this region may have been negligible since the temperature in the vicinity of this region was maintained low.

6. Along with a list of possible attractive characteristics of this device there may be apparent drawbacks.

Make up a report on the topics below.

1. «Sodium»

2. «Chlorine»

3. «Uranium»

4. «Plutonium»

(See appendix 4)

TEXT 2

Before reading the following text, work with a partner and discuss the questions below. Base your answers on your possible knowledge of the topic. Then read the text and check your guesses.

1. What is a chart of the nuclides?

2. What does a typical block for a stable nuclide contain?

3. What does a typical block for an unstable nuclide contain?