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  • Le son (Electronique de puissance)

    Le son est une variation rapide de la pression atmosphérique. Pour son traitement, il est généralement transformé en variation proportionnelle de tension électrique par des dispositifs appelés d'une manière générale microphones. Propagation du son Le son ne se propage pas dans le vide. Le son est transmis par des milieux gazeux, liquides, solides. La propagation du son n'est pas instantanée. La propagation du son dans un milieu donné se fait avec la même vitesse quelque soit le son émis. Caractéristiques...

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  • Signaux et systèmes numériques (Traitement du signal)

    Notions fondamentales Un signal est défini comme le support physique de l'information, exemple: le signal sonore représente les fluctuations de la pression de l'aire qui est transmise à l'oreille. Mathématiquement un signal est représenté par une fonction d'une ou plusieurs variables généralement cette variable est le temps. Ici le signal est fonction de deux variables, une tension en fonction du temps. Une image de télévision est fonction de l'espace et du temps.   Classification des signaux La...

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  • Adverbs (Anglais)

    What is an adverb? An adverb is a word which modifies or adds to the meaning of a verb an adjective or another adverb. Adverbs may be divided according to their use into the following classes. Adverb of time Before, now, since, than, already, soon etc... e.g.: She has been here before Adverb of place Here, there, everywhere, nowhere, somewhere. e.g.: Susan came here yesterday. Adverb of manner Badly, easily, slowly, timely, kindly, rapidly, nicely, foolishly. e.g.: The teacher quickly answered...

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  • Les suites numériques (Mathématique)

    Généralités On appelle suite numérique ou suite réelle, toute application d'une partie I et IN dans IR, c'est-à-dire: U: I → IR n → U(n) = Un La suite est dite finie si I est finie I= {0, 1,2,...m} La suite est dite infini si I est dite infinie I=IN ou I=IN* On désigne par Un l'image de l'entier n. L'image U(n) de l'entier naturelle n par l'application U se note généralement Un et on dit que la suite est de terme générale Un et la suite est noté U(n) n appartient à I   Classification des suites Suite...

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The interrogative and negative form of ordinary verb


Interrogative

Paul talked to Peter yesterday
Did Paul talk to Peter yesterday?

I walked to the library last Tuesday
Did I walk to the library last Tuesday?

Mary left the house at 7 o'clock last Friday.
Did Mary leave the house at 7 o'clock last Friday?

Peter ate cassava yesterday.
Did Peter eat cassava yesterday?


Interrogative with a question word

The girls left the house at 6. 30
When did the girls have the house?

They left at 6. 30
Who left the house at 6. 30?


Negative

The boys bought some sweets for the girls yesterday
The boys did not buy some sweets for girls yesterday

My brother went to bed at 8 o'clock last night
My brother did not go bed at 8 o'clock last night

Mary listened to the radio yesterday
Mary did not listen to the radio yesterday

Alice wanted fish for dinner
Alice did not want fish for dinner

Remark:

didn't = did not


Vocabulary

To beat (beat, beaten) = to hit

  • Mballa's father beat him with a big cane last Saturday
  • To hit again and again.
    The dancer are beating the drum
  • To do better than.
    Cameroon beat Spain in the world cup

To go (wend, gone) = I went to church yesterday.
To find (found, found)

  • To discover by accident.
    Did you money in the street last year?
  • Discover by searching. Example: Did you find your last book?

To travel: to go from one place to anther.
My father traveled from Yaoundé to Douala and back week-end.
Wood → adjective=wooden
My desk is made of wood
I have a wooden desk
wool → woolen
My pullover is made of wool
It is a woolen pullover wool
gold → adjective = golden
My father bought a golden watch for my mother at her birthday.
To begin (began; begin) = to start
Classes begin at 7.30 everyday
through: The arrow passes through the circle
to save: to free from harm. Example: Jesus saved the world.
The firemen saved the woman from the begin house.
To save = safe; safety


The feminine of nouns

Feminine in "ess"

god

goddess

heir

heiress

poet

poetess

prince

princess

actor

actress

master

mistress

waiter

waitress


Irregular forms

masculine

feminine

male

female

gentleman

lady

bachelor

spinster

dog

bitch

widower

window

hero

heroine

bridegroom

bride

boy

girl

brother

sister

father

mother

uncle

aunt

man

woman

son

daughter