PRESENT PERFECT

PRESENT PERFECTex.1
1. I've lost my purse. Ican't find it anywhere
2. I don't know wht time it is. My watch has stopped
3. I heven't got my keys. I've left them at home
4. It's his birthday. I've made him a cake
5. It's working fine now. I've fixed it
6. He's decided to get fit. He's started running twice a week
7. I know Paris very well. I've been there many times
8.Let me get my umbrella.It has started to rain
9. We're going to the concert. I've bought the tickets
10. I'm sorry, she's not here. She's gone out

ex.2
1. the film has been watched by Mr Jones
2. English has been spoken by the people
3. comics have been read by him
4. volleyball has been played by us
5. the song has been sung by them
6. photos have been taken by me
7.the hoesework has been done by her
8. the children have been helped by the policemen
9. text messages have been watered by mother

A.Present Perfect (passive voice)ex.I
1. La tetraciclina ha sido reconocida como una causa de la hipertensión intracraneal benigna
2. La diarrea asociada con la administración de clindamicina ha sido estudiada
3. Los pacientes con síntomas vasculares y neurológicos han sido encontrados
1. Este lugar de estos medicamentos en el tratamiento de la sífilis no ha sido establecido
2. Estos medicamentos no han sido reconocidos como una causa de hipertensión

B.Adverbs in sentences of present perfect
ex.II
1. Estudios recientes con oxitocyn purificada y sintéticos han avanzado significativamente la comprensión del papel de esta hormona en la secreción de la función y la leche
2. La inflamación del nervio óptico ha sido ocasionalmente encontrado ...

C.Logic Connectors
ex.III1.Although
tetracycline has been recognized as a cause of benign intracranial hypertension
, only a few cases have been documented in adults
2.Although
treponemicidal substances have been employed for many years as local prophylactic agents
, the use of these compounds is no longer recommended.

ex.IV1. Aunque el mecanismo antidiurética es protectora de la naturaleza, puede dar lugar a serias complicaciones particularmente en desordenes caracterizados por la retención de líquidos y edema.
2. Aunque la mejora en la visión no es de esperar en pacientes con atrofia óptica, la detención del proceso de atrofia puede ser obtenida por tratamiento con penicilina
mejora

Vocabulary
a)muscle fiber-fibra muscular
b)attached-adjunto
c)muscle contraction- contraccion muscular
d)bones-huesos
e)posture-postura
f)heat production-produccion de calor
g)muscle tendons-tendones musculares
h)contractibility-contractibilidad
i)movement-movimiento
j)joint-mixto
k)skeletal muscles-musculos del esqueleto
l)joint stability-conjunto de estabilidad
m)tendons-tendones
n)muscle metabolism-metabolismo muscular