Ответ:
1) If you know the word for something, say it another way.
2) It is easier to communicate in a foreign language if you use gestures when you speak.
3) If you want to translate a word, use a bilingual dictionary.
4) If you type the word incorrectly, the spell check underlines it.
5) If you be more fluent in English, you would have no problem travelling on your own.
6) If Gina didn't speak so well, I would give the talk.
7) If the instructions say we should restart it, then we should restart it.
8) If you slide your finger across the screen, it unlocks the phone.