Краткое пояснение: Present Perfect образуется с помощью вспомогательного глагола 'have'/'has' и Past Participle основного глагола. Для отрицательных предложений используется 'not' после 'have'/'has'.
Пошаговое решение:
- 1. My friend Ted has spent a lot of money on gadgets. (Ted - 'he', глагол 'spend' в Past Participle - 'spent').
- 2. My father has not bought a new car. (Father - 'he', глагол 'buy' в Past Participle - 'bought').
- 3. The students have written a lot of tests this term. (Students - 'they', глагол 'write' в Past Participle - 'written').
- 4. I have traveled a lot. (I, глагол 'travel' в Past Participle - 'traveled').
- 5. They have not had lunch this morning. (They, глагол 'have' в Past Participle - 'had').
Ответ: has spent, has not bought, have written, have traveled, have not had