Could you tell me whether there exists any difference between
a) Lack of chicken feed means that chicken farms have to slaughter their stock.
b) Lack of chicken feed means that chicken farms are having to slaughter their stock.
?
Thanks in advance!
There is a difference. a) is a statement or general fact to show that something is always valid/true. (present tense usage).
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There is a difference.
a) is a statement or general fact to show that something is always valid/true. (present tense usage).
b) is a statement to describe an event or situation that is currently happening; it won't be true forever. (progressive -ing usage for "having")
Compare:
I have to read a lot for my classes. (generally)