I read a sentence just now
high schools and language schools are all different
then I am thinking when do I need to use "all different". I guess "all different" is unnecessary when talking about things are obviously different, for instance
water and bread are all different
"all different" seems to be redundant in the sentence above, just "different" would be better.
It seems "all different" is necessary when things are not very easy to distinguish, such as lager and ale
lager and ale are all different
any ideas?