Punctuation question (subclause with comma)

[Ahmed Hussein]

what is the difference between the two sentences:
My friend who has been to England is a doctor.
My friend, who has been to England, is a doctor.

[Lea1966]

[Barb_D]

You got it exactly, Lea.

With the commas, it's extra information. As you say "by the way, he's also been to England."

Without the commas, it's restrictive and identifies which specific friend you mean.

[Ahmed Hussein]

thank u very much 4 your interest.I want to know the uses of verb 'forget'. when it is in the passive or active form?.to me i think it always must be (i was forgetten) like in Arabic.notice that there is something makes me forget.

[Ahmed Hussein]

please can u tell me the difference between (little and alittle)and (few and afew).many thanks 4 u.

yours Ahmed

[Ahmed Hussein]

why u don't answer my last questions? i want to be elegant in english so please help me.now i want to know the plural of these words:crisis,ox,advice ,fish,and data.

[Ahmed Hussein]

i really want to thank every body participates in this valuable work which makes us improve our english.please tell me the difference between present perfect and present perfect continous tense.

[Torsten]

Hi Ahmed,

Please read present perfect progressive vs. present perfect. As for the plural of 'advice' it doesn't exist since advice is an uncountable noun: advice is uncountable

Before you continue to ask questions at random, I'd like you to study this: Grammar Section

Finally, you should really work on your spelling: How to improve my writing skills

Best regards,
Torsten

TOEIC short conversations: Two conference participants introduce themselves to each other