I haven`t cleaned my football boots. They haven`t started their meal. I haven`t done my homework. He hasn`t won all his matches this year. My brother and I haven`t seen any films this week. It's my birthday party today. I haven`t invited many people. He hasn`t washed his hands. They're very dirty. Mum's really angry. We haven`t tidied our room! I can't play with my friends this evening. I haven`t finished my homework. I haven`t visited New York for three years. Where's Alison? We haven`t seen her since yesterday. Dad hasn`t been taking a holiday since last August.John hasn`t played the violin since he was at school.
Advantages and disadvantages of e-learningThe advantages of e-learning is that there is no need to go to school / college. This is a great convenience for teachers and student / student. But e-learning, there are downsides. To do this, the teacher and the pupil / student must have a computer, Web - camera, microphone, and of course the Internet. Internet and computers have virtually all, and prices are now adequate, but not all computers have built-in Web - camera, microphone. If you buy these devices separately, it would cost cheap. In addition, you need to know how to install these gadgets on your computer if you buy them separately. Also, the teacher and the student should be enough time to understand the topic and get high-quality knowledge, because the student to explain the material (especially the examples) on the internet is more difficult than in the classroom during the lesson.
