Unless / As long as and provides / providing









Unless

The club is for members only. You can't go in
unless you are a member.
This means: You can't go in except if you are a member; or,
                      You can go in only if you are a member.

Unless = except if

Some more examples of unless:

- I'll see you tomorrow
unless I have to work late.
- Don't tell Sue what I said
unless she asks you.
- Shall I tell Sue what you said? Not
unless she asks you.
- I don't like fish, I wouldn't eat
unless I was extremely hungry.

We often use unless in warnings:

- We'll be late
unless we hurry.
-
Unless you work much harder, you won't pass the exam.
- I was told I wouldn't pass the exam
unless I worked harder.

Instead of
unless it is often possible to say if... not:

- Don't tell Sue what I said
if she doesn't ask you.
- We'll be late
if we don't hurry.

As long as etc

As long as or so long as
provided (that) or provinding (that)

All these expressions mean 'if' or 'on condition that'.

For example:

- You can use my car
as long as you drive carefully.
   (= You can use my car but you must drive carefully - this is a condition)

- Travelling by car is convenient
provided/providing (that) you have somewhere to park.
   (= but only if you have somewhere to park)

-
Providing/provided (that) she studies hard, she'll pass her exams.
   (= she must study hard - if she does this, she will pass)

When you are talkin about the future, do not use
will after unless / as long as / provided / providing. Use a present tense:

- We'll be late
unless we hurry. (not 'unless we will hurry')
-
Providing she studies hard, she will pass the exam. (not 'providing she will study')

exercises
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