Explanation

Drugs affect your body's central nervous system.

They affect how you think, feel and behave.

Explanation

If I had not caught him, he would have been drowned means اگر میں اسے نہیں پکڑتا تو وہ ڈوب جاتا

This is a conditional sentence.

Explanation

In other words, man had been struggling hard for life.

Note: had been is the helping verb of Past Perfect Continuous Tense.

Explanation

Formula of Future Perfect Continuous Tense: Subject + will have been + first form of a verb + ing + for + time

Explanation

He came from the East Indies and was drowned in the Thames.

We use second form in simple sentences of Past Indefinite Tense.

Came is the second form of a verb.

Drowned is the second form of a verb. 

Explanation

India is hostile to her neighbours.

Hostile to means دشمن یا مخالف ہونا

Explanation

Here before means کے سامنے

He will appear before the judge means وہ جج کے سامنے پیش ہوگا

Explanation

 Independent clause: An independent clause is the combination of at least one subject and predicate. 

Explanation

• If he  drove more carefully he would not cause an accident.
• This is a conditional sentence. 
• We use second form of a verb in such type of sentences.
• Drive is the first, Drove is the second and Driven is the third from of the verb.

Explanation

In fact, Agricultural Production consumes more fresh water than any other human activity.

 agriculture accounts (on average) for 70 percent of all freshwater withdrawals globally