1. В том, что мы не ставим перед ним вс глагол don't/doesn't, а используем отрицательную форму глагола (с частицей not).
I am not a doctor [не I don't be a doctor/I don't am a doctor]
We are not doctors [не We don't be a doctor/We don't are a doctor]
He is not a doctor [не She doesn't be a doctor/She doesn't is a doctor]
2. Так же - мы не ставим вс глагол do/does на начало предложения, но ставим одну из форм глагола to be (в зависимости от лица).
Am I a doctor? [не Do I be a doctor?/Do I am a doctor?]
Are we doctors? [не Do we be doctors?/Do we are doctors?]
Is he a doctor? [не Does he be a doctor?/Does he is a doctor?]
3. always (всегда), often (часто), every day (каждый день), every year (каждый год), every week (каждую неделю), usually (обычно), sometimes (иногда), seldom (редко) (подробный список можно посмотреть в Интернете)
Summer holidays - it's always nice. Ended lessons left behind calls the break, and ahead - something very good.
Summer is the time to take a walk with her friends, and the game play, and the guests go. But most of all I look forward to when our parents go with us to the sea.
This summer, I finally learned how to swim, and every morning, jumping for joy on the road to the sea and back.
I love the sea.
Now on the table in front of me are seashells. I enclose them in your ear and hear the sound of the surf. I seem to feel like an ocean wave flies and, stumbling over a stone and throws in my face a thousand sparkling saltwater spray. And I'm laughing, I'm happy with his mom, dad, sister, together with the sea gulls and the sun.
ответ
1 - a
2 - e
3 - d
4 - c
5 -b