Pronunciation. From BBC and Cambridge.
A question from Svetlana in Kazakhstan:
Could you help me to explain difference in pronunciation of two pair words - there're, they're and there'll be, they'll be? Dictionary pronounces separate words they, there, are and will. However, in real English speech you use contraction. These contractions are usually unstressed, so it's difficult for me to define difference.
Em podrieu ajudar a explicar la differència en la pronunciació de les parelles de paraules  there're/they're and there'll be/they'll be? El diccionari ofereix la pronunciació per separat però a la conversa real l'anglès empra contraccions. Aquestes contraccions no tenen accent cosa que en fa difícil la diferenciació.

Hello Svetlana – this is a great question as, like you said, it's almost impossible to find the answer to this in a dictionary or grammar book. You're right – we use these kinds of contractions all the time when we're speaking and because they're not 'important' words like nouns or verbs, they tend to get mumbled a little bit and it’s difficult to hear how they are said.

If you try and pronounce any of these contractions slowly, you can make out the differences between them:

there're        /ðɛərə/        
they're          /ðeər/
there'll be      /ðɛərl/ 
they'll be    /ðeɪl/

But of course, when we're speaking normally we don't say them slowly and in fact, the two pairs of words you're asking about end up sounding almost exactly the same. Let's try putting them into sentences so you can hear them in context:

She said there're going to be about a thousand people there.
I hope they're all going to bring something to eat!
If not there'll be a lot of hungry people.
I expect they'll be so busy dancing they won’t think about food.

Can you hear that the first two words sound a bit like 'there' /ðərə/ and the second two words sound like 'thell'/ðɛərl/ . Listen again.

Because, as you said, they are unstressed, the pronunciation of the second syllable in each word almost completely disappears.

One last thing – one of the contractions you’ve mentioned is only really used when speaking, while the other three are used in informal writing as well. Do you know which is the odd one out? It’s there're - the contraction of 'there are'. It's quite uncommon to see this written down unless you are trying to write exactly like we speak, for example in direct speech in a dialogue.

I hope this answers your question. Remember to practise saying them within whole sentences rather than as single words as it's much easier to make the pronunciation sound natural.

Family.

Animals
Songs aimed at improving knowledge of animals.
Cançons per  aprendre el animals.

USUAL PRONUCIATION. PRONUNCIACIÓ HABITUAL. 

English has no rules for spelling or pronunciation, but there are some strong tendencies that may help us guess what the most probable pronunciation of a word is. I will tell you here the most important ones, but don't forget that you will find many exceptions to these rules. 

 L'anglès no té regles per a deletrejar o pronunciaar, però hi ha tendències generals que ens poden ajudar a endevinar quina és la pronunciació més probable d'una paraula. Vos deix aquí les més importants, però no oblideu que trobareu moltes excepcions a aquestes regles.

This may be useful for consultation but, please, don't try to memorize it, it would be useless since there are so many exceptions. To pronounce English correctly you have to find out the pronunciation of every single new word when you learn it. 

Pot ser útil per a consula però, per favor, no tracteu de memoritzar-ho, seria innecessari donat l'elevat nombre d'excepcions. Per a pronunciar l'anglès correctament heu de cercar la pronunciació de cada nova paraula quan l'apreneu. 

A

	A		sat, marry, hand, ran, cat radio, case, page, fate, mate				father, bath, dance, cast, fast
	AR		artist, car, park, start, far, charm				AR+vowel: care, stare, Mary
	AIR		air, chair, fair, stair, hair, fairy
	WA		watch, what, want, quantity, quality				walk, water, wall, war, warm
	AU/AW		Paul, caught, fault, cause, daughter, saw, lawn, law
	AL		all, call, fall, ball, tall, salt, bald, false				pal, calendar, balance
	AI/AY		rain, paid, day, away

E

	E		egg, editor, bet, went, send, pest		English, pretty, before
	EE		sleep, deep, meet, cheese, keep, teen
	EER		beer, cheer, steer, eery
	EA		read, eat, tea, meat, speak, breathe		bread, health, ready
	EAR		near, ear, dear, fear, beard, clear		pear, wear, bear
	ER (stressed)		person, verb, prefer, certain
	EW	/ju:/	new, few, sewerage, knew
	EI/EY		receive, ceiling, perceive, key

I

	I		if, film, his, pistol, risk fine, mine, pile, pilot, child
	IE		field, piece, niece
	IGH		high, light, fight, might
	IR (stressed)		first, girl, stir
	IRE		fire, pyre, tired, Ireland

O

	O		bottle, clock, pot, dog so, ago, home, cold, post		son, love, come, London
	OO		good, book, look food, cool, pool
	OOR		door, floor, poor
	OR		horse, port, more, before
	WOR (stressed)		work, worse, word, worm, world
	WO		worry, wonder, won woman, wolf		woke, won't, wove
	OA		boat, coast, coat, road, coal, oak
	OU/OW		house, out, found, brown, how, town		low, snow, know, soul
	OUR/OWR		hour, our, sour, flower, power
	OI/OY		boy, boil, joy, toy, voice
	OUGHT		bought, brought, ought

U

	U	/ju:/	student,ambulance,cute cup, uncle, funny, us	blue,June,flute put,sugar
	UR (stressed)		turn, fur, spur
	UR + vowel	/jʊə/	pure, cure, curious, mature
	UI		fruit, juice, suit

All these vowels and vowel combinations are often pronounced with a Schwa 

() if they are in a non-stressed syllable, so I don't give any examples of this sound here because it is unnecessary.