1.7 Formal or informal

SB p. learn the rule:

Fill the gaps with the phrases:

Make your own table with formal and informal phrases:

Mark the sentences as formal (F) or informal (I).
1 a) Hi John,   [F, I]
b) Dear Mr Johnson,   [I, F]
2 a) Has the principal been informed about the incident?   [I, F]
b) Has anyone called the principal and told her what happened?   [I, F]
3 a) If you want to know more, drop me a line.   [F, I]
b) Should you require more information, do not hesitate to contact me.   [I, F]
4 a) Applicants for the scholarship should have a strong interest in jazz.   [I, F]
b) You need to be into jazz to get the scholarship.   [I, F]
5 a) When was the university set up?   [I, F]
b) Do you happen to know when the university was established?   [I, F]
6 a) There's no way I'll finish the essay tonight - there isn't enough time.   [I, F]
b) I am afraid there is too little time for me to complete the assignment tonight.   [I, F]
7 a) This study has been conducted annually for five years.   [I, F]
b) Someone has carried out this study every year for five years now.   [I, F]
8 a) Sometimes people think that teenagers are childish and don't take them seriously.   [I, F]
b) Sometimes teenagers are thought to be too immature to be taken seriously.   [I, F]
9 a) Students caught using a mobile phone during the exam will be removed from the room.   [I, F]
b) If a teacher catches you using a mobile during the exam, he/she'll ask you to leave the room.   [I, F]