17-2
+By the time = one event is completed before another event.
( The use of the past perfect and future perfect in the main clause.)
Ex:
-By the time I did my test, the time had already done.
-By the time my teacher is sick, she will have already absent.
+Since = from that time to the present.
( The present perfect is used in the main clause.)
Ex:
-I haven't finished my spring I homework since the last session was end.
-I haven't remembered her since i had and accident.
+Until/Till = to that time and then no longer.
( Till is used more in speaking than in writing; it is generallu not used in formal English. )
Ex:
-I have to run until i use all my energy.
-My house will be destroyed until someone destroys it.
+As soon as/once = when one event happens , another event happens soon afterward.
Ex:
-As soon as I'm at home, UFO will appear.
-Once I'm in school, School will be destroyed by a monster.
Your sentences are pretty funny and weird, but grammatically, they are confusing. Slow down when you're typing. That will fix some careless mistakes. Review your sentences before posting.
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