'as soon as' vs 'when'

[seema]

English Language Tests, Intermediate level

ESL/EFL Test #142 "Time clauses: future tense examples", question 4

I'll email you ......... I arrive.

(a) as soon as
(b) until
(c) as long as
(d) while

English Language Tests, Intermediate level

ESL/EFL Test #142 "Time clauses: future tense examples", answer 4

I'll email you as soon as I arrive.

Correct answer: (a) as soon as

Your answer was: correct
_________________________

why can not we we use "when "?

seema

[Mister Micawber]

.
You can use 'when', but that word is not one of the options offered for this question.
.
_________________
Native English teacher at Mister Micawber's

[Wly]

Hello,

Why we can't use "as long as" in this sentence?

[Beeesneees]

I suppose strictly speaking you could, but then you would be saying "I'll e-mail you providing (if) I arrive' whereas the meaning is 'I'll email you once (when) I arrive'.
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett

[Anushila]

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What is the difference between 'when' and 'while' ?

[Beeesneees]

Each of those words have a number of uses.
You can read about each of them here:
http://oald8.oxfordlearnersdictionaries.com/dictionary/when
http://oald8.oxfordlearnersdictionaries.com/dictionary/while
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett

[Allifathima]

I.
1. Her parents died while she was still at school.
2. Her parents died when she was still at school.
Do they mean the same?
II.
Can I write "Some people work better to music while others do not." as "Some people work better to music when others do not."?

[Beeesneees]

I. yes
II, They both amount to the same thing, yes.
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett