1.He cut (past simple, active) his finger while he was repairing (past continuous, active) his car.
2.By that time he had already changed (past perfect, active) our plans.
3.The automobile had become (past perfect, active) a decisive factor in the development of many countries.
4.We are carrying out (present continuous, active) new research.
<span>1.
Our friends go there every year too
2. The waiters also were rude
3. The hotel
and its gardens were next to the beach
4. You can also see the Royal Hotel
5.
You can buy them in the town too
6. My sister also likes it a lot</span>
Вы добавляете окончание Множественного числа к слову -s.
Book - books
cat - cats
dog - dogs
angel - angels и тд.
Существуют неисчисляемые существительные. Например: water, juice, money, jeans, scissors и тд. Данные слова существуют только в единственном числе.
Если вам надо образовать притяжательную форму Множественного числа, то вы добавляете апостроф.
The boys' books. Книги мальчиков.
Окончание -ing не имеет отношения к Множественному числу