Grammar Analysis: Prepositions of time and place:
Prepositions of time:
"At" is used with specific times and festival periods:
The plane arrives at 20:00 p.m. They are flying to London at Christmas/Easter. She revises her lessons at night. She goes jogging at the weekend. He has lunch at midday=noon. He always goes to bed at midnight. He is reading at the moment/present. at lunchtime/teatime/bedtime/the end of.../the same time..."On" is used with days and dates: The students study English on Monday/Monday morning. They are flying to London on 26th December. He has an exam on his birthday. on Christmas Eve/Valentine's Day."In" is used for part of a day, months, seasons, or years: She likes jogging in the morning/afternoon/evening. It is too cold in winter and hot in summer. They travelled to Germany in 2017. She is going to fly to Turkey in July. Prepositions of place:"At" is used for specific addresses: I live at 17 Al Quds Street. They live at 16 Kennedy Place."At" is used with the following: at home/school/work/the library/the cinema/the office... I arrived at the railway station yesterday morning. (small location or town) I arrived in Paris/France yesterday morning. (country or city)"On" is used to mean by the lake or sea: London lies on the Thames."On" is used with surfaces: The book is on my desk. There was a map on the wall. Write your name on a piece of paper."In" is used With geographical regions: He has been living in France/Paris for six years. She lives in a small village in the mountains. "In" is used with cities, towns, and larger areas: Do you live in Liverpool? She loves jogging in the park. "In" is used with buildings, rooms, and places: Can you wait for the doctor in the waiting room? There's a mess in the office. "In" is used with containers: There is a lot of milk in the fridge. I've got some money in my pocket. Examples: 
The boat is sailing under the bridge.
The students get onto the bus.
The students get out of the bus.
The cat is between the dogs.
The ducks swim across the water.
The kittens are in the basket.
The man is jumping over the box.
There are over 100 prepositions in English. The most common ones are:
about
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beside
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near
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to
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above
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between
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of
|
towards
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across
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beyond
|
off
|
under
|
after
|
by
|
on
|
underneath
|
against
|
despite
|
onto
|
unlike
|
along
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down
|
opposite
|
until
|
among
|
during
|
out
|
up
|
around
|
except
|
outside
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upon
|
as
|
for
|
over
|
via
|
at
|
from
|
past
|
with
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before
|
in
|
round
|
within
|
behind
|
inside
|
since
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without
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below
|
into
|
than
|
|
beneath
|
like
|
through
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References: For further information, check the following links:
https://rb.gy/2yyqpe https://rb.gy/g59bwh
https://rb.gy/zbx6ti https://rb.gy/62t9hl https://shorturl.at/hjM58 Enough/Too:
Adj+Enough/Too+Adj: Too= in a higher degree (negative)
Too+adjective
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Enough (quantity)= as much as needed (positive)
adjective+enough
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The porter cannot lift the box. It is very heavy.
The box is too heavy for the porter to lift.
The soup is very hot. I cannot eat it.
The soup is too hot (for me) to eat.
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Samir is
quite clever. He understands perfectly.
Samir is clever enough to understand perfectly.
You are
quite old. You can rely on yourself.
You are old enough to rely on yourself.
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Examples: 
The student cannot buy the book. It is too expensive.The students could not finish the test. It was too long.I could not answer the question. It was not easy enough.We can't get into this small car. It isn't big enough.The juice isn't sweet enough. Enough + noun:Examples:
She hasn't got enough money to buy this smartphone.Karim has too many friends. (too many+countable nouns)Nancy has got too much patience. (too much+ uncountable nouns)