be/become

be is static. It indicates a given state or condition.
become is dynamic. It indicates attaining a given state though a change from some other state.

The weather was warm. No change is indicated.
The weather became warm. It was cooler before. It changed to being warm.

CJ

They are both correct. Which do you want to emphasize? That your age will be 18? Or that you will become 18 by changing from 17 to 18?

This is not a question of correctness, but a question of what is more idiomatic, that is, a question of how people usually say it.

Most people usually say I will be 18 next year, emphasizing what the age will be. (The change fr

0Excuse me, but can you tell me what's the difference between:02br
02br
00John becomes ill.02br
02br
00John became ill.0-

0Hi,02br
02br
00First, consider this. Do you know the difference between 01i00Mary cooks dinner 02i00and 01i00Mary cooked dinner02i00 ?02br
02br
00Best wishes, Clive0-

1i00John becomes ill.02i00 --> simple present tense. Perhaps John gets sick every time he rides a roller coaster, for example.02br
02br
01i00John became ill. 02i00--> simple past tense. Perhaps John got sick last Monday, for example.0-

0Dear Clive:02br
02br
00Thank you for immediate reply. Mary cooks dinner indicate that Mary cooks dinner all the time. Mary cooked dinner tell us it was in a past time when Mary cooked dinner.02br
02br
00With this understanding in mind, I would never say: John becomes ill. Because, too me, it is always in a past time John started to feel ill. So I would sa

0 01blockquote

01cite10Anonymous12cite10With this understanding in mind, I would never say: John becomes ill. Because, too me, it is always in a past time John started to feel ill. So I would say only John became ill is logical.12blockquote

10 Did you read and understand my post, Anon?00 0-

0Thank you for explanation. 02br
02br
00How about:02br
02br
00John becomes an expert.02br
02br
00John became an expert.02br
02br
00I still don't feel John becomes an expert (or John becomes a teacher) is logically correct. Am I right?02br
02br
00Thank you.0-

0Hi, Yankee:02br
02br
00I read and understood your post. I don't use this forum often and I am not familiar with the format. Actually I post a reply to your post a while ago but I didn't address to you. Sorry for the confusion. 0-