Questions 6 & 21.

There are four oblique moods in Modern English, of which two are synthetical and two analytical.  1.The synthetical moods are subjunctive I and subjunctive II.  2.The analytical moods are the conditional and the suppositional.  Synthetical Moods  Subjunctive I represents an action as problematic, but not as contradicting reality. It is used to express order, request, suggestion, supposition, purpose. e.g. If the weather is fine tommorrow, we shall go to the country. The subjunctive II represents an action as contrary to reality. e.g. I wish he were with us.  Anaytical Moods  The conditional mood is mainly used in the principal clause of a complex sentence with a subordinate clause of unreal condition. e.g. If he were at home, he would help us. The suppositional mood represents an action as problematic, but not necessarily contradicting reality. e.g. I should speak. 

The function of the oblique moods is to represent something in  the speaker’s mind not as a real fact, but as a wish, purpose,  condition or doubt, supposition, problematic or contrary to fact. In  English there are FOUR groups of forms which can represent an  action as desirable, necessary, possible, impossible, problematic,  unreal, etc.:  1) subjunctive I  I, he, she, it, we, you, they be smth.; do smth.  2) subjunctive II  I, he, she, it were / was smth; did smth.  had been smth.; had done smth.  We, you, they were smth.; did smth.  had been smth.; had done smth.  3) the conditional mood  I, we should do smth.  should have done smth.  He, she, it, you,  they  would do smth.  would have done smth.  4) the suppositional mood  I, he, she, it,  we, you, they  should do smth.  should have done smth. 

Question 13. Gerund or Progressive/Continuous

Both forms end in -ing. Nevertheless it is easy to find out whether it is a Gerund or a Progressive form.

Progressive tenses

These tenses are formed with von to be and the infinitive + - ing.

sentences	tense
He is reading a book.	Present Progressive
He was reading a book.	Past Progressive
He has been reading a book for three hours.	Present Perfect Progressive
He had been reading a book before Mary came in.	Past Perfect Progressive
He will be reading a book when I get home.	will-future Progressive
He will have been reading a book.	Future Perfect Progressive
He would be reading a book if he had time.	Conditional Progressive
He would have been reading a book if he had had time.	Conditional Perfect Progressive
A book is being read.	Present Progressive - Passive
A book was being read.	Past Progressive - Passive

Gerund

The Gerund is formed only with infinitive + - ing.

sentence

Reading books is great fun.

He likes reading books.

He is looking forward to reading books at the weekend.

He is keen on reading books.

He is used to reading books.

What about reading books?

He likes the idea of reading books.

After reading the book, he went to bed.