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Son James Posted 13 years ago
Grammar
Present & Present Perfect in conjuction clauses like Unil and After.
(A)" Passengers should be careful when opening the overhead luggage bins as contents may have shifted during travel."
(B)" Passengers should be careful when opening the overhead luggage bins as contents may shift during travel."
Since I've known both of (A) and (B) sentences in the above are okay in grammar, I want to know whether or not the following cases can be possible.
[1]Before
1-a) It will be many years before the situation improves.
1-b) It will be many years before the situation has improved. (okay ?)
[2]After
2-a)I'll call you after I speak to them(okay?)
2-b)I'll call you after I've spoken to them.
[3]Until
3-a)I'm not going out until I finish this job.
3-b)I'm not going out until I've finished this job. (okay?)
I've learned in case of the main clause having tense of future, we should use present tense. Now I think I've found I can use the tense of "present perfect",too.Provided that the main clause has the tense of future, I know I can't use future tense inside conjunction clauses such as before,after,and until clauses.
Am I right ? I will really appreciate it if you can confirm it.
Thanks in advance.
(B)" Passengers should be careful when opening the overhead luggage bins as contents may shift during travel."
Since I've known both of (A) and (B) sentences in the above are okay in grammar, I want to know whether or not the following cases can be possible.
[1]Before
1-a) It will be many years before the situation improves.
1-b) It will be many years before the situation has improved. (okay ?)
[2]After
2-a)I'll call you after I speak to them(okay?)
2-b)I'll call you after I've spoken to them.
[3]Until
3-a)I'm not going out until I finish this job.
3-b)I'm not going out until I've finished this job. (okay?)
I've learned in case of the main clause having tense of future, we should use present tense. Now I think I've found I can use the tense of "present perfect",too.Provided that the main clause has the tense of future, I know I can't use future tense inside conjunction clauses such as before,after,and until clauses.
Am I right ? I will really appreciate it if you can confirm it.
Thanks in advance.
Top answer
1-- OK. 2-- OK 3-- OK Son James Provided that the main clause has the tense of future, I know I can't use future tense inside conjunction clauses such as before,after,and until clauses. You usually can, but native speakers normally use a present tense in those subordinate clauses.
- 1-- OK.
- 2-- OK 3-- OK Son James Provided that the main clause has the tense of future, I know I can't use future tense inside conjunction clauses such as before,after,and until clauses.
- You usually can, but native speakers normally use a present tense in those subordinate clauses.
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2 Answers
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1-- OK.
2-- OK
3-- OK
2-- OK
3-- OK
Son JamesProvided that the main clause has the tense of future, I know I can't use future tense inside conjunction clauses such as before,after,and until clauses.You usually can, but native speakers normally use a present tense in those subordinate clauses.
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I see. I'll use a present tense in subordinate clauses. Thanks a lot,Mr.Micawber
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