Use of time prepositions.

What are time prepositions ?
Time prepositions are words at the beginning of phrases which tell us when something happens or for how long.

Use of IN
We use In with periods of time:

1. Parts of the day : early in the morning, in the afternoon, in the evening.
2. Months : in September, in October......
3. Seasons : in (the) summer, in (the) autumn, in (the) winter ............
4. Years : in 1971, in 2011 ........
5. Decades and centuries : in the 1930s, in the 21th century.....
6. In can mean 'during or within a period of time'
He is expected to land in 24 hrs. 

7. In can also mean 'at the end of a period of time'
Wait down there.......I am coming in 5 minutes.

8. There are some idiomatic expressions using in :
In time = (a moment before it is too late)
I made the meeting last night in time.
In plenty of time for = (a long time before something)
Sonia got to the cinema in plenty of time for the film.

  Use of On
We use On with time expressions to say that something happens during a particular day or date:

1. Days : on Monday, on Sunday, on his birthday, on Christmas day.......
2. Dates : on October the 4th, on November 3rd..........
3. With parts of days/dates : On Friday afternoon, on Sunday morning.......
4. Phrasal use : on time =( at exactly the right time)
I am on time today...right?

  Use of At
1. We use at in expressions which mean something happens exactly at a particular time.
The shop closes at half-past five.

2. We also use at to talk about something that happens during the night or the weekend:
It gets very cold at night in the desert.
We always go to the beach at the weekend
{Note: In US English people say on the weekend.}

3. There are some idiomatic expressions which use at such as:
At the moment = during the period of time.
Kanta is studying electronic engineering at the moment at BUET.

 Use of BEFORE, AFTER, and DURING

1. We use BEFORE and AFTER to talk about a sequence of events, and we use AFTER with periods of time:
Sadi had to get home BEFORE midnight.

 AFTER a couple of months Pavel got a job as a translator.

2. We use DURING for something that continued through a specific period of time.
  DURING 1998 Fahim was working in Thailand.

3. We also use DURING when we are talking about something happening within a period of time:
We ate popcorn DURING the film.

 

Learning Basic Tense.

Definition : Tense is the form in which a verb is used to express when an action is, was or will be performed. ( কোন verb এর কাজ কখন সংঘটিত হয়, হয়েছিল, বা হবে তা নির্দেশ করার জন্য ঐ verb এর যে রূপগুলো ব্যবহ্নত হয় তাদেরকে tense বলে।সংক্ষেপে, ক্রিয়া সংঘটিত হওয়ার বিভিন্ন বিভিন্ন সময়কে  tense (ক্রিয়ার কাল) বলে) 

Kinds of tense

There are 3 kinds of tense:
1.  Present tense
2.  Past tense
3.  Future tense

a)   Present Indefinite tense

Structure: subject+verb (s/es)+object

Note: We use person (I, We, You, They, He, She, It, Anyname) as subject. ( আমরা subject স্থলে person ব্যবহার করে sentences তৈরি করব।)
I + learn + English.

Note: When we use 3rd person singular number (He, she, It, anyname) as subject, then add s/es with verb.
He +learns +English.

Note: o, s, ss, sh, ch, x, z when remain after verb, then use es with verb. Otherwise, use s with verb.
He +goes +to learn English.
Cool Bird +wants +to learn English.

Note: When last letter is y of verb and previous letter is Consonant of y. Y replace by i and add es with verb. ( যখন verb এর শেষের অক্ষরটি y হয় এবং y এর পূর্বের অক্ষরটি যদি Consonant হয় তাহলে y এর পরিবর্তে i এবং এর শেষে es যোগ করতে হবে ) try—tries, cry—cries.


But previous letter is Vowel of Y then only add s with verb. (কিন্ত্ত Y এর পূর্বের অক্ষরটি যদি Vowel হয় তাহলে শুধুমাত্র s যোগ করতে হবে।) play—plays
She +tries +to learn English.
He +plays +English word game.

Some Important Structure:

Note:  Following those structure, You can make many sentences by changing Subject and verb. 

1.   Subject +verb

I try.

2.   Subject +don’t/doesn’t +verb

You don’t try
He doesn’t try.

3.   Do/does +Subject +verb?

Do they try?
Does he try?

4.   Don’t/doesn’t +Subject +verb

Don’t I try?
Doesn’t she try?

5.   WH +do/does +Subject +verb?

What do you try to learn?
What does she try to learn?

6.   WH +don’t/doesn’t +subject +verb?

Why don’t I try to learn English?
Why doesn’t Cool Bird try to learn English?

Note: WH means (What, Where, When, Why, How, Who, Whom, Which…, Whose…).