1. преобразуйте следующие предложения в форму множественного числа: 1. the man looked at the shelf. 2. the leaf fell from the tree. 3. a bird sang on the branch of a tree. 4. that lady gave the girl a key. 5. the child saw a sheep in the field. 6. the ox ate the grass.

 Eдинственное число (множнственное число):

1. The man (men) looked at the shelf (shelves). 

2. The leaf (leaves)  fell from the tree (trees). 

3. A bird (the birds) sang on the branch (branches) of a tree (the trees).

 4. That lady (ladies) gave the girl (girls) a key (the keys). 

5. The child (children) saw a sheep (the sheep) in the field (fields). 

6. The ox (oxen) ate the grass.