Ex 1 Make the sentences negative and interrogative

EX 1 Make the sentences negative and interrogative:

1. The researcher had to include various significant findings of his observations into the report.

The researcher had not to include various significant findings of his observations into the report.

Had the researcher to include various significant findings of his observations into the report?

2. At present the surgeon has to extend his investigations to make a proper conclusion.

At present the surgeon has not to extend his investigations to make a proper conclusion.

At present has the surgeon to extend his investigation to make a proper conclusion?
3. We have to increase the amount of food given to this patient.

We have not to increase the amount of food given to this patient.

Have we to increase the amount of food given to this patient?
EX 2 Put general questions to the following sentences making other

necessary changes:

1. Somebody wanted to speak to the doctor about the condition of patient Smirnov.

Did somebody want to speak to the doctor about the condition of patient Smirnov?
2. The boy has impaired something in his abdomen when he fell down.

Dis the boy has impaired something in his abdomen when he fell down?

3. Someone will have to describe the course of this patient's disease.

Will someone have to describe the course of this patient’s disease?

4. Everyone knows that phagocytes destroy microorganisms.

Does everyone know that phagocytes destroy microorganisms?

EX 3 Read the pairs of sentences and choose those corresponding

to Text The Founder of Virology:

1.b) Ivanovsky began to study the physiology of plants and microbiology.

2.b) Tobacco mosaic disease did not occur due to bacteria.
3.b) Ivanovsky had to pass the juice of the diseased plant through a fine filter.
Questions for the text material:

1.     Who was Dmitry losiphovitch Ivanovsky?

A prominent Russian scientist.
2.     When did he become a doctor?

In 1895.
3.     What did he carry out on various plants?

Ivanovsky had to make many experiments on various plants.
4.     When did he discover tobacco mosaic disease?

In 1901.
5.     What did Dmitri Ivanovsky discover?

The tobacco mosaic disease.
6.     Who discovered the first human virus in 1901?

Dmitry Iosiphovitch Ivanovsky.

7. What was the first virus in the world?

Smallpox and measles.