выполнить задание!
Замените следующие придаточные предложения причастными оборотами, оставив союзные слова when, while, if.
1. When the heart muscle is stimulated, it contracts. 2. Medical treatment must be more useful if it is applied immediately. 3. Certain drugs may cause serious harm if they are used without doctor’s permission.
If medical treatment would be applied immediately, it might be more useful.
The heart muscle contracts while being stimulated.
When drugs are used without a doctor’s permission, they may cause serious harm.