Tenses used with IN CASE
Main Clause In Case Subordinate Clause
Future(will or going to)
Present Perfect In Case Simple Present
Past Perfect In Case Past Tense
(Note : There's a sequence of tense in "in case")
Some students are carrying lots of pencils in case they need them.
I have taken my dictionary in case I can need it.
I had a glass of water by my bed in case I got thirsty.
• We may use "should" in both present and past forms. It only indicates a weak possibility.
He would always take his umbrella in case it should rain.
I want to give you my phone number in case you should need me.
• We may express "in case" with some other expressions such as because, for fear that... etc:
I always put some money aside in case I need it urgently.
I always put some money aside because I may need it urgently.
I always put some money aside for fear that I may need it urgently.
In case of + a noun=In the event of
In case of emergency , you can call this number.
In the event of panic, call me.
7) Otherwise/or (else)
Tom always eats breakfast. Otherwise he gets hungry.(=If he doesn't eat breakfast...)
Tom always eats breakfast, or(else) he gets hungry.
Stay at home for two days, and you'll feel better.
(=If you stay at home for two days, you'll feel better.)
I would visit you, but I don't know your address.
(=I would visit you if I knew your address.)
I would have phoned you, but I didn't know you were ill.
(=I would have phoned you if I had known you were ill.)
10) But for
We use "but for" for type-2 and type-3
My husband pays the fees, but for that I wouldn't be here for a while.
My husband paid the fees, but for that I wouldn't have been there.
But for your help, I wouldn't pass the exam.
I passed the exam. But for your help, I wouldn't have passed it.
Without his generous contributions, we could never have held the the Charity Ball.
(=If he hadn't contributed generously...)
I can't possibly finish this job without any help.
(=I can't possibly finish this job if I don't get any help.)
12) Omission of if
"if" is sometimes left out in conversational style .
You touch me again , I'll kick your teeth in . (=If you touch again ... )