2. Сделайте предложения отрицательными. Не worked at the hospital last summer.

1. Сделайте предложения отрицательными.

Не worked at the hospital last summer. Не did not work at the hospital last summer. Не didnt work at the hospital last summer.

They went to the library on Saturday. They did not go to the library on Saturday. They didnt go to the library on Saturday.

 Ann came late last night. Ann did not come late last night. Ann didnt come late last night.

В отрицательных предложениях  употребляется вспомогательный глагол did перед глаголом. После него прибавляется отрицательная частичка not. Did и not часто сокращаются до didnt соответственно.