Очень Write the following sentences a) in the negative, b) in the interrogative.

1. She was sketing the whole evening last Sunday.

2. We were waiting for our parents from 4 till 5 yesterday.

3. It was snowing all day three days ago.

4. They were playing tennis when I saw them.

5. The students were working in the lab at this time yesterday.

I'd like to describe my best friend. She has a beautiful round face,a small, slightly convex forehead. Her skin is fair and her cheeks are flushed. The eyebrows are dark, in an even semicircle. The nose is small, straight, slightly turned up. The eyes are large, gray-blue, with long thick lashes, the expression of the eyes is always friendly and kind. Her lips are pink and even, her teeth are white,and when she smiles, funny dimples appear on her cheeks. My friend's hair is dark and wavy, cut straight and just below her shoulders. My friend is slender, her posture straight, her shoulders slightly thrown back.

My friend is very sociable, so it is very easy to talk to her and find a topic for conversation. Another very important trait of her character is responsibility,if she was entrusted with some important business, be sure she will do everything perfectly. She is also a very creative person,she has a lot of different ideas in her head and this is not surprising, because she draws perfectly. And she also has a little sister,she always has an extra minute to play with her.

This is my best friend-beautiful, kind and caring.

1. Unless your friend has an invitation, he will not be able to go to the party.

2. She will late for the lesson if she doesn't leave earlier.

3. If you are angry, they will not let you in the house.

4. He will not open the book unless he knows what tasks to do.

5. We shall have to stay home if the weather gets worse.

6. Unless you are more careful with the knife, you will cut yourself.

7. If I tell you a secret, will you promise to keep it?

8. If my mother does not have to work next weekend, we will be able to go to the funfair.

Объяснение:

Схема построения условных предложений типа First Conditional:

           [If + Present Simple], + [Future Simple]    

либо   [Future Simple]  +  [If + Present Simple]

В условной части (где "если") глагол в Настоящем Простом времени, в результативной части - глагол в Будущем Простом.