USES OF PARTICIPLES AND INFINITIVES

Ask, advise, allow, command, force, forbid, invite, encourage, compel, beg, order•, imagine, instruct, permit, persuade, tell, require, remind, teach, etc. are followed by Object + To +V2

For example, 

 Incorrect- He advised to do it by me. 

 Correct- He advised me to do it. But if these are used in Passive Voice, then they are followed by To +V,. 

Know is followed by how/ where/when/why and Infinitive. 

For example, 

Incorrect- I know to write a letter. 

Correct- I know how to write a letter.

 After let, bid, behold, watch, see, feel, make etc. we use Bare-Infinitive and not To-infinitive. 

For example,

 Incorrect-I heard him to speak on several subjects.

Correct- I heard him speak on several subjects.

Bare Infinitive is used after Modal Auxiliaries (can, could, may, might, shall, should, will, would, must, dare not, need not). 

For example, 

Incorrect- You need not to work hard. 

Correct- You need not work hard.

Had better, had rather,had as soon ... as ... , had sooner etc. are followed by Bare Infinitive.

For example,

Incorrect- He had better to go now.

Correct- He had better go now. 16. Conjunction than is also fol¬lowed by Bare

Infinitive.

Regards,

Team ExamTyari