Вставьте необходимую форму глаголов to be / to have this bird little she got a grandfather

This bird is little.
She has got a grandfather

To wose little
hase got

Базовая разница между Past Simple и Past Perfect очевидна. Действие, выраженное Past Simple, произошло в а выраженное Past Perfect – до момента в

Давайте сравним.

Alan finished his essay at 10pm yesterday.  – Алан закончил сочинение вчера в 10 вечера. (Past Simple)Alan had finished his essay by 10pm yesterday. – Вчера к 10 вечера Алан закончил писать сочинение. (Past Perfect).

В первом случае, at 10pm yesterday дает нам момент во втором случае, фраза by 10pm yesterday указывает на то, что действие произошло до момента.

Единственное, на что Вы должны обратить внимание, это повествовательные предложения, в которых описывается последовательность действий. В подобных предложениях нужно использовать исключительно Past Simple.

Пример:

On his birthday, Jaсk got up at eight. Нe opened his presents and then he went to the zoo with his family. – В свой День Рождения Джек встал в восемь. Он открыл свои подарки, а затем пошел в зоопарк с членами своей семьи

In summer I went to Brighton. When I arrived there it was late afternoon. 
After dinner I put on my raincoat and went out for a walk. It was a nasty day, the sky covered with clouds, and it rained a little. As I have been moving slowly along the quiet empty streets, I saw a stranger. He first passed me by but then he stopped. «Are that you, Peter?» he cried out. It was Jones. «I have not seen you for ages», he said. – «Why, what are you doing here?» I asked— «Why are you going home?» - «I cannot», he answered. «I forgot the name of the hotel where my wife and I stayed». - «If you ring up the hotel, you will find out where you had stayed ». I smiled. He said that he had had no money. And he explained that they got to Brighton at 11 o'clock. 
They left their things at the station and went to a hotel. He had changed his clothes and decided to go for a walk. The sun has been shinning brightly and there was nothing in the forecast about rain. I suggested that we went to my hotel. While Jones was taking a shower I thought the situation over. Then we began telephoning all the hotels in Brighton.
We did it so well that next afternoon Jones found both his hotel and his wife