Gerunds

Gerunds are defined as the -ing form of a verb. They have several functions.

Used as subjects and complements

• Skiing is my favorite sport.
• Hiking can be very strenuous.
• Seeing is believing

Used as objects following prepositions and prepositional expressions

• Thanks for tending my children.
• The job consists of typing, filing, and answering the phone.

Used as objects following certain verbs.*

• The children enjoyed watching the parade.
• Ms. Terrell avoided paying her taxes until it was too late.

Gerunds can sometimes take objects of their own:

• Roland is afraid of making mistakes.
• Sandy is considering leaving New York. 

source : http://www.eslgold.com


*These verbs are commonly followed by gerunds.

admit begin discuss hate love practice regret stop

advise can't help dislike hesitate mention prefer remember suggest

anticipate complete enjoy imagine mind quit resent threaten

appreciate consider finish intend miss recall resist tolerate

attempt delay forget keep neglect recollect risk try

avoid deny go like postpone recommend start understand

Tenses

As we know, there are 16 tenses in grammar.You still remember what the tense is, right?  We have learn some basic tenses in beginner level. then, here are some other tenses :

• Present Perfect Tense
• Past Perfect Tense
• Future Continuous Tense
• Future Perfect Tense
• Past Future Tense

  
Present Perfect Tense

Form :
" S + have/has + V3 + O"

Use :

• used to express a past event that has present, or heve recently done.

Examples :
We have already written our assignments. (we are not writing it anymore).
Owen has already told the whole story. (He is not telling about that story anymore).

Past Perfect Tense
Form :
" S + had + V3"

Use :

• refers to some action that happened in the past and was completed before another event in the past.

Example :
Jessica had gone to the market before she went to the store.

Future Continuous Tense
Form :
"S + will/shall + be + V-ing"

Use :

• to tell about ongoing event at a perticular future time or during some time in the future.

Example :
We will be fishing from this saturday till monday.

Future Perfect Tense
Form :
"S + will/shall + have + V3 "

Use :

• used to describe an event that is expected or planned to happen before a time of reference in the future. 

Example : 
She will have fallen asleep by the time we get home. 
I shall have gone by then.

Past Future Tense
Form :
"S + Should/would + Verb" 

Use :

• used to express an action which was to be completed in the past but was future as regards another past action

Examples :

He said that he would leave in three days. 

He promised that he would buy me a pair of gloves.

source : wikipedia