Prepositions

Prepositions

Prepositions of Place

Prepositions of Time

Adjectives with Prepositions

ABOUT
worried about
disappointed about
excited about
furious about

AT good at
surprised at (de/por)

BY
surprised by (por)

FOR
Adjective+for+object+infinitive
It was easy for me to pass the exam. 

IN
disappointed in
interested in (en/por)

 
OF
afraid of
fond of (ineresado/a por/en, aficinado/a a)
proud of

ON
keen on (interesado/a en/por)


TO
rude to (con)
Adjective+to+infinitive                                           be+adjective+to
It's easy to follow these instructions.                      These instructions are easy to follow.
It's interesting to learn English.                              English is interesting to learn.
It's difficult to understand her accent.                    Her accent is difficult to understand. 
 
WITH
happy with
bored with
satisfied with
upset with

"Rats" of the Verbs

Present Simple
Habits:
Always, frequently, usually, generally, often, every day
sometimes, rarely, seldom, once a week/month/year,
in the morning/afternoon/evening, at night/noon/midday
never,  ...

Present Continuous
Present: At the moment, at present, this year, now,
Future: Tonight, tomorrow, next Saturday

Present Perfect
It affects the present: Ever, never, just, yet, recently, already
It continues until the present: For, since, how long...?
Stative Verbs: Feelings and emotions.

Past Simple
Completed action: Two days ago, yesterday, last week, ...
Series of completed actions: When, then, ...

Past Continuous
Incompleted action in progress at specific time in the past: 
At 8 o'clock last night, while, as
Action in progress in the past, interrupted by another action:
____ when + (Past Simple)
Two incompleted actions in the past:
While ____ , ____

Past Perfect
A completed action which happened before another action or time in the past:
Already, by the time, before, ...

Future Simple Vs. Be + Going to
Sudden decision              Plans for the future and intentions
Predicting the future       An action which is clearly going to happen
A future timeble
Promises
Offers
Refusals
Requests
Suggestions
This evening, later, next week, soon, at ten o'clock, in the future, tomorrow, in an hour


Future Continuous
In progress at a specific time in the future:
at this time tomorrow,
by 7 o'clock,
by the end of ...,
at this time,
next...

Future Perfect
It will be completed by specific time in the future: 
By this time next week.
by ten o'clock,
by then