As some native speaker sound too fast, sometime is hard to really listening to them, especially with some contractions....
I contractions
I am → I'm →"I'm older than you."
I had →I'd → "I'd better do my homework."
I have → I've → "I've always liked sushi."
I will → I'll → "I'll tell you later."
I would → I'd → "I'd have taken you if I had known."
You Contractions
You are → You're → "You're my best friend."
You had → You'd → "You'd gone to the cinema."
You have → You've → "You've seen it before."
You would → You'd → "You'd have really liked it."
You will → You'll → "You'll be late."
He Contractions
He had → He'd → "He'd already spent the money."
He has → He's → "He's been to London twice."
He is → He's → "He's my cousin."
He will → He'll → "He'll lend you his bike."
He would → He'd → "He'd rather go shopping."
She Contractions
She had → She'd → "She'd gone to bed before he called."
She has → She's → "She's been studying for hours."
She is → She's → "She's very intelligent."
She will → She'll → "She'll be working late today."
She would → She'd → "She would love to go."
It Contractions
It had → It'd → "It'd been snowing all night."
It has → It's → "It's been fun."
It is →It's → "It's much warmer today."
It will → It'll → "It'll be fine."
It would → It'd → "It'd have been great."
We Contractions
We are → "We're all excited."
We had → We'd → "We'd forgotten to take them."
We have → We've → "We've all thought about it."
We will → We'll → "We'll go next summer."
We would → We'd → "We'd like to go again."
They Contractions
They are → They're → "They're living near here."
They had → They'd → "They'd just finished reading the report when their boss came."
They have → They've → "They've asked me before."
They will → They'll → "They'll meet you there."
They would → They'd → "They'd have walked if the weather had been better."
There Contractions
There has → There's → "There's been mail today."
There is → There's → "There's more in the fridge."
There will → There'll → "There'll be a protest strike tomorrow."
There had → There'd → "There'd better be a good reason why you are late."
There would → There'd → "There'd have been more people here if the party had been on the weekend."
That Contractions
That had → That'd → "That'd better be the last time she calls me."
That is → That's → "That's it."
That will → That'll → "That'll make it easier to understand."
That would → That'd → "That'd have been why."
Negative Contractions
Are not → Aren't → "You aren't invited."
Can not → Can't → "You can't smoke in here."
Could not → Couldn't → "He couldn't find you."
Did not → Didn't → "She didn't remember me."
Does not → Doesn't → "He doesn't work here."
Do not → Don't → "I don't like spiders."
Had not → Hadn't → "He hadn't been told."
Has not → Hasn't → "She hasn't left."
Is not → Isn't → "This isn't difficult."
Must not → Mustn't → "I musn't make a noise."
Need not → Needn't → "You needn't come."
Should not → Shouldn't → "We shouldn't eat sweets."
Was not → Wasn't → "It wasn't bad."
Were not → Weren't → "They weren't helpful."
Will not → Won't → "We won't regret it."
Would not → Wouldn't → "You wouldn't believe me."
