подчеркнуть все инфинитивы и конструкции с инфинитивом, с указанием их функций. Underline all the infinitives and constructions with the infinitive,
stating their functions.
For example: He went to buy some bread-
adverbial modifier of purpose
to the verb went. It is difficult for me to do it-
complex subject expressed by an infinitival construction introduced by for.
1. I intend to start immediately.
2. To descend was extremely difficult.
3. You must do this work properly.
4. I wanted to call but I had no time to.
5. The sailors felt the waves dash over them.
6. She gave him the letters to mail at once at the next box.
7. We sent a boat for them to come to the shore.
2 What did A. Popov invent?
3 How did the invention affect radio devices?
4 What are the main parameters of radio receivers?
5 Does sensitivity mean a measure of the receiver's ability to receive weak signals?
6 Which parameter means the ability of the receiver to reject undesirable signals?
7 What does fidelity mean?
8 The principle of operation of the radio receiver is not very difficult understand, is it?
9 Are there various types of receivers?
10 Where are used communication receivers?
11 Are broadcast receivers used in radio, telephone and telegraph service or in sound and visual programms?