PREPOSITION
– always “on” with days and dates
They will come on Monday.
The English exams will be held on January 15.
– always “at” with time reference
I will be there at 5 o’clock.
They brought it at 6 a.m.
– “in” when we wish to say something will be done in some time
We will deliver the package in two hours.
The taxi should be here in 15 minutes.
– “to” in a reference to place
We go to school.
I travel to Boston very often.
Other use of prepositions
– in the following expressions
in the evening, in the afternoon, in the morning
They will (They’ll) come in the evening.
I will (I’ll) do the shopping in the morning.
– in front of (place reference)
before (time reference)
ago (with the past tense and always after time term)
The bus stop is in front of their house.
We will have a meeting before lunch.
I was in Canada 10 years ago.
CONJUNCTIONS
– “that” as a conjunction is often omitted in English, “but”, “because”, “because of”.
I think (that) we will win.
I couldn’t write the essay because of my illness.
They had to go home because it was getting dark.
Sorry, I could not send the email yesterday, but I will do it now.
– If a subject is the same: so as to, in order to, so as not to, in order not to. If a subject is not the same: so that, in order that.
I came early in order not to miss anything.
I will speak slowly so that you can understand.
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