Tabla de tiempos verbales

Direct Speech |  | Indirect Speech |
simple present
He said, “I go to school every day.” | | simple past
He said (that) he went to school every day. |
simple past
He said, “I went to school every day.” | | past perfect
He said (that) he had gone to school every day. |
present perfect
He said, “I have gone to school every day.” | | past perfect
He said (that) he had gone to school every day. |
present progressive
He said, “I am going to school every day.” | | past progressive
He said (that) he was going to school every day. |
past progressive
He said, “I was going to school every day.” | | perfect progressive
He said (that) he had been going to school every day, |
future (will)
He said, “I will go to school every day.” | | would + verb name

He said (that) he would go to school every day. |
future (going to
He said, “I am going to school every day.” | | present progressive
He said (that) he is going toschool every day. |
|   | past progressive
He said (that) he was going to school every day |
Direct Speech |  | Indirect Speech |
auxiliary + verb name
He said, “Do you go to school every day?”
He said, “Where do you go to school?” | | simple past
He asked me if I went to school every day.*
He asked me where I went to school. |
imperative
He said, “Go to school every day.” | | infinitive
He said to go to school every day. |
 
Direct Speech |  | Indirect Speech |
simple present + simple present
He says, “I go to school every day.” | | simple present + simple present
He says (that) he goes to school every day. |
present perfect + simple present
He has said, “I go to school every day.” | | present perfect + simple present
He has said (that) he goes to school every day. |
past progressive + simple past
He was saying, “I went to school every day.” | | past progressive + simple past
He was saying (that) he went to school every day. |
|   | pastprogressive + past perfect
He was saying (that) he had gone to school every day. |
future + simple present
He will say, “I go to school every day.” | | future + simple present
He will say (that) he goes to school every day. |
 
Direct Speech |  | Indirect Speech |

Además de morder e inyectar su veneno neurotóxico, algunas cobras como la cobra escupidora occidental escupen el veneno comprimiendo los músculos que tienen en los colmillos. Estas cobras confían más en escupir el veneno que inyectarlo. Suelen apuntar a los ojos provocando una ceguera temporal, y a veces permanente.

El veneno de las cobras se viene usando en la investigación médica debido a que contiene una enzima, la lecitinasa, que disuelve las paredes de las células, así como las membranas que rodean a los virus.

Mitología
La cobra, símbolo solar y protectora del faraón, representada como Uadyet y Uraeus, fue de gran relevancia en la mitología egipcia.
Cobra is the common name for a group ofpoisonous snakes of the Elapidae family, especially the genera Naja, with about 20 species, and Ophiophagus, a species known for their menacing appearance and bite. They inhabit tropical and desert areas of southern Asia and Africa.

It is easy to recognize because they display a kind of 'hood' in the head when they are irritated or threatened. Accomplishes this by flattening the vertebrae of the head.

In general, feed on rodents and birds, which kill by injecting a neurotoxin through their teeth. Among predators include the mongoose and some raptors.

 
[Edit] Classes of cobras
Cobra is the common name of certain poisonous snakes, known for their intimidating looks and deadly bite. It is easy to recognize by a kind of hood that display when irritated or feel threatened, which is formed by extension of the ribs of the back of his head. These reptiles live in the Philippines, southern Asia and Africa.

The actual charge or charges of Burma (Ophiophagus hannah) is the longest venomous snake in the world. The average length is 3.7 m but some reach 5.5 meters. It is a thin snake, olive or brown in color, with bronze eyes. Live in the Philippines, Malaysia, southern China, Burma, India, Thailand and the Malay Peninsula. Its activity is diurnal and feeds mainly on other snakes (some of them also poisonous). Its venom is highly toxic.

The other is known as the Asian cobra cobra cobra india or glasses (Naja naja), due to a design similar toglasses that display on your skin. Rarely reaches a length exceeding 1.8 meters. Widening the area of your head is proportionately much greater than the king cobra and is usually yellow or brown. It develops its activity at dusk and at night, and feeds on reptiles, birds and rodents.

This snake is responsible for many deaths each year in India, where he was treated with religious respect and are rarely kills, but are abused such as removing the teeth and send it to people at shows with flutes or trumpets.

[Edit] Venom
The venom of cobras, a neurotoxin, has a devastating effect on the nervous system. However, due to the increased availability of an effective antidote, the high mortality rate due to its powerful poison has fallen in parts of Asia.

In addition to bite and inject its neurotoxic venom, some snakes such as Western spitting cobra spitting venom compressing the muscle they have in their teeth. They rely more on cobras spit venom injection. Often point to the eyes causing temporary blindness, and sometimes permanent.

The venom of cobras has been used in medical research because it contains an enzyme, lecithinase, that dissolves cell walls and membranes surrounding the virus.

[Edit] Mythology
The charge, a solar symbol and protector of Pharaoh, and represented as Uraeus Wadjet was of great significance in Egyptian mythology.