Ответ:

active:

1. Linda made some biscuits yesterday

2. Jessica carried all the bags last Saturday

3. Keith delivered the box yesterday morning

4. Tom and Beth bought two plane tickets

passive:

1. the biscuits were made yesterday

2. Bags were carried last Saturday

3. Box was delivered yesterday morning

4. Two plane tickets were bought last week

Verified answer

Ответ:

1. Linda made some biscuits yesterday.
  Some biscuits were made by Linda yesterday.

2. Jessica carried all the bags last Saturday.
   All the bags were carried by Jessica last Saturday.

3. Keith delivered the box yesterday morning.
   The box was delivered by Keith yesterday morning.

4. Tom and Beth bought two plane tickets last week.
   Two plane tickets were bought by Tom and Beth last week.

Объяснение:

Слова yesterday, last Saturday, last week указывают на то, что действия произошли в прошлом, то есть глаголы должны быть в форме Past Simple.

В активном залоге past simple образуется по схеме: Субъект + V2 (то есть 2я форма глагола). Для правильных глаголов это базовая форма (“V”) + окончание "ed" для всех лиц (looked, finished). Для неправильных глаголов это форма прошедшего времени ("2-я форма" из таблицы неправильных глаголов) для всех лиц (did, came, took).

В пассивном залоге past simple образуется по схеме:

Субъект + was / were + V3 (третья форма глагола)