Useful Phrases

• Quantifiers   –>  non, some, half, many, most, both, all.
• Rule                –>  quantifier + of whom / of which in relative clauses.

Examples :

• The potato has many uses, none of which involve drinks.
• Ninety people have died, half of whom were killed by mosquitoes.
• There were ten proposals, all of which were carefully considered.
• Two students made mistakes, both of whom apologized.

Other useful relative phrases are:

at which point,      by which time,            since when,                 a period in which,       in which case,      the part where,      no reason why,       

the reason why,           the extent to which,     as a result of which

Examples:

1️⃣ at which point

• He finished explaining the rules, at which point everyone asked questions.

2️⃣ by which time

• She arrived at the station, by which time the train had already left.

3️⃣ since when

• He has lived in this house since 2015, since when it has been completely renovated.

4️⃣ a period in which

• There was a period in which the company struggled to make a profit.

5️⃣ in which case

• You might miss the bus, in which case you should take a taxi.

6️⃣ the part where

• My favourite scene is the part where the hero saves the child.

7️⃣ no reason why

• There is no reason why you should apologize.

8️⃣ the reason why

• The reason why he failed the exam is a lack of preparation.

9️⃣ the extent to which

• Scientists are studying the extent to which pollution affects human health.

🔟 as a result of which

• He forgot his password, as a result of which he couldn’t access his account.