Find partial derivatives of the function. z=ln tgx/y
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ответ:

объяснение:

if your family have a pet dog, who will take it for a walk every morning ?

if my parents know   more about computers, they will understand why i need a new laptop

hank will not become an it specialist if he not go to university

we will wear t-shirt and shorts all the year round if we love in a hot country

if he not hurry up he will miss the beginning of the film

what’s wrong with you! if you not eat your lunch you'll be hungry soon

конструкция

( придаточное предложение) if + present simple + (главное предложение) + future simple

> if my parents know   more about computers, they will understand why i need a new laptop

или

future simple + if + present simple

> we will wear t-shirt and shorts all the year round if we love in a hot country

также: помимо will можно использовать модальный глагол can, may)

1. Mike can run very fast. 
2. Jane could not play the guitar two years ago but now she can. 
3. I sat up very late yesterday because I had to do a lot of homework. 
4. Do you have to make the report today? 
5. It’s a very interesting film. You must see it. 
6. My sister works in a hospital. She has to wear a uniform. 
7. James is very tired because he works so much. I think he could have a holiday. 
1. Can I use your computer? 
2. Could you borrow me some money me? 
3. Why do we have to get up so early? 
4. Why did she have to go to hospital? 
5. Could / Jane come to the party?
6. Need you wait for me?.
1. I can not use your computer.
2. You cannot lend me some money.
3. We don't have to get up so early.
4. She did not have to go to hospital.
5. Jane could not come to the party. 
6. You do not need to wait for me.
1. I have to get up early tomorrow. – What time do you have to get up? 
2. Liz had to leave immediately. – Why did Liz have to leave immediately? 
3. George has to learn a foreign language. – What language does George have to learn? 
4. I can play two musical instruments. – What musical instruments can you play? 
5. They couldn’t finish the work on time. – Why couldn't they finish the work in time? 
1. The girl who lives next door is very pretty. 
2. The dress which Ann was wearing at the party costs a fortune! 
3. The people who accompanied me during the journey were very helpful. 
4. The apples which you bought yesterday are delicious.