37. Since he went to senior high school, he has worked very hard.
Ever since he was in high school, he's been working hard.
Classical sentence pattern analysis since sentence pattern is exquisite
The conjunction since leads to clause usage parsing
Usage 1: Since the guided temporal adverbial clause uses the general past tense of the transient (terminating) verb, the main sentence is done with the present or when the present is completed. This usage is the most common. At this point, the entire sentence can be translated literally. That is, the time represented by the slave clause is calculated from the time when the predicate action of the slave clause occurs until the present.
1）Since he changed jobs he's looked like a new man.
He jumped ship like a different person.
2) She's a changed woman since she got that job.
Since she got that job, she has become a judge.
Oxford Advanced English-Chinese Dictionary
3）he has dealt with five guys since she divorced Tom.
She had been in a relationship with five men since her divorce from Tom.
4）I have been missing her since she left.
I've missed her since she left.
5）We have been missing her since she left here.
We've missed her since she left here.
6）She's been working there since the beginning of last summer.
She has been working there since early last summer. Oxford Advanced English-Chinese Dictionary
7）She had been worrying ever since the letter arrived.
She had been anxious ever since she received that letter. Oxford Advanced English-Chinese Dictionary
Example 7 illustrates: The main sentence can also be completed in the past state, but it is still relatively rare in the exam.
Usage 2: Since guided temporal adverbial clauses use continuity verbs or general past tenses of static verbs that represent states, and the main sentence is done with the present or when the present is completed. At this point, the time represented by the temporal subordinate clause is from the end of this continuing action in the clause or the static verb action representing the state to the present time period, and the translation cannot be translated literally.
1）I haven’t heard any noise since I slept.
I woke up and didn't hear anything.
2）I’ve written her 30 letters since I was here.
Since I left here, I have written 30 letters to her.
3）It has been almost five years since I taught high school students.
I haven't taught high school for about five years.
4）It's been an age since we've seen them.
We haven't seen them in a long time.
5）What was the party like?
Wonderful.It’s years since I enjoyed myself so much .
How about the party? Very wonderful. I haven't had the most fun in years. 93 high exam questions
6）It's been years since I enjoyed myself so much as last night.
I haven't been as happy in years as I was last night.
7）I have changed my job five times since I was in Shanghai.
I changed jobs five times after I left Shanghai.
Please compare:
He has written to me frequently since I was ill.
He has written to me frequently since I fell ill.
Usage 3: Since guided time adjective when the verb in the subordinate clause is complete, the verb of the main sentence is completed now or when the present is completed. At this point, the translation can be directly understood literally.
1）It has been almost five years since I have taught senior three students.
I've been teaching for five years now since I started my junior year of high school.
2）I have never heard from her since she has worked there.
I haven't heard from her since she went to work there.
3）Since we have owned a car,we have gone camping every year.
Ever since we had a car, we've been going camping every year.
4）We think highly of your up-grading spirit since you have been trying to change yourself.
Ever since you've been trying to change yourself, we've all highly appreciated your self-motivation.
5）We all admire you since you have been doing everything to help the poor.
We have admired you since you have been doing anything to help the poor.
Since I’ve been at this school ,we have had three headmasters.
Since I came to this school, we have changed 3 principals.
Since I was at this school,they have had three headmasters.
They have changed three principals since I left the school.
Usage 4. Special case usage, the time expressed in the clause is since I was a child; Since we were young, and so on continuing verbs or table states of the general past tense of static verbs can also indicate that the action or state persists to the present, (often ever since conjunction):
She had been worrying ever since the letter arrived.
He's been in the doldrums ever since she left him.
He had been depressed since she had left him.
He's been there ever since you left!
He's been there since you left!
Ever since we moved last year, I worry a lot about whether I can handle this new job
Ever since we moved last year, I've been very worried about getting this new job done.
I've had the hots for him ever since he came to college.
Ever since he came to college, I've had a crush on him.
Ever since I saw the diary excerpts I've been cast down.
Ever since I saw the excerpt from the diary, I've been very frustrated.
It's been niggling at my mind ever since I met Neville in Nice
Ever since meeting Neville in Nice, I've been nervous. The above 6 examples are excerpted from the Collins Advanced English-Chinese Dual-Solution Learning Dictionary
The two of them have been close friends ever since they knew.
The two of them have always been very good after they met.
He has loved labour ever since he was a child.
He loved to work since childhood.
The girl has grown prettier than ever since I saw her a year ago.
After a year of not seeing, the little girl came out more beautifully.
The above 3 examples are excerpted from the Chinese-English Dictionary
He has loved reading ever since he was a child.
He loved to read since he was a child.
She has given a lot of help ever since she worked in our factory.
Since she came to our factory, she has given me a lot of help.
Note that ever since can be translated directly when used, and there are no rules such as verb continuity.
Look again at the classic example sentences:
So much has changed in the sport since I was a teenager.
The sport has changed a lot since playing me as a teenager.
I had been out since I was 17.
I've been open since I was 17 years old and I've been gay.
They've been best friends since they were children.
They have been best friends since childhood.
I've earned my own living since I was seven, doing all kinds of jobs.
Since I was 7 years old, I have supported myself and done various jobs.
She's been using since she was 13.
She has been on drugs since she was 13 years old.
The above 5 examples are excerpted from the Oxford High-Level English-Chinese Dictionary
Usage 5: The main sentence is it as the subject followed by a period of time + since the subordinate clause usage
Also: A), It is +--- a period of time - + since + continuous predicate verb generally past tense (table negative)
It is three years since she lived here. She hadn't lived here for three years.
It's only a year since I last saw the child and he's grown so tall.
This child had not been seen for a year and had grown so tall.
It's twenty years since I've seen her.
I haven't seen her in twenty years.
How long is it since we last went to the theatre?
How long have we not been to the theater?
It's been two weeks now since she called.
She hadn't called in two weeks now.
B) It is + - a period of time -- + since S + instantaneous predicate verbs generally past tense (table affirmation) example:
I've been quit smoking for years.
It is nearly two years since I came here.
I've been here for almost two years.
It's a long time since they left.
They've been away for a long time.
It is two years since we last parted.
It's been two years since we last broke up.
It was two years since we had last parted.
We had been breaking up for two years at that point.
It had been (或was) fifteen years since she had left.
It's been 15 years since she left.
From a temporal point of view:
It is + a period of time + since clause (generally past tense)
It was + a period of time + since clause (when completed in the past)
It has been + period of time + since clause (when completed now or in general past tense)
It had been + period of time + since clause (when done in the past or generally in the past tense)