ARN

There is - There are

We use there is - there are to express existence of something.

Singular: There is

• There is a car in the garage.
• There isn´t a ball under the bed.

We also use there is with non-countable nouns:

• There is milk in the fridge.
• There isn´t sugar for my coffee.

Plural: There are

• There are some buildings on that street.

• There are twenty students in my class.

For / Since

1. The word for is used to show an amount of time.

• for three days
• for a few years
• for five months

2. The w0rd since is used to tell when an action started.

• since 1987
• since last wednesday
• since she started school

Material biotechnology laboratory

I ask teacher about biotechnology laboratory material. Than gave me a list of the following material and equipment.

• Agitador magnético - Magnetic Stirrer
  
• Autoclave eléctrica - Autoclave electric
• Cromatógrafo de gases - Gas chromatograph
• Cámara de electroforesis - Electrophoresis chamber
  
• Espectrofotometro - Spectrophotometer
  
• Micropipeta - Micropipette
• Asa bacteriológica - Bacteriological loop
• Bureta - Burette
• Caja de petri- Petri dish
• Cámara de Neubauer - House Neubauer
• Matraz Kitasato - Kitasato flask
  
• Embudo Buchner - Buchner Funnel
• Crisol - Crucible
• Cristalizador - Criztallizing
• Escobillón - Swab
• Pipeta - Pipette
• Probeta - Test tube
  
• Gradillas - Racks
• Matraz Erlenmeyer - Erlenmeyer flask
• Matraz volumétrico - Volumetric flask
  

IN CLASS

Write some places to get entertainament.

• Can I eat popcorn, mom?
• Could I go with my friend to the party?
• May I do some questions to your students?
• Would you mind if I don´t go to church?
• Would you like to go with me to theater?
• Do you want swim tomorrow in the Trinidad?

ASKING PERMISSION AND INVITATIONS

1. Would you like to come in?
2. Would you like to go the movies when you finish?
3. What movie would we see?
4. Would you like a cup of coffee?
5. Could you give me your telephone number?
6. Would you like some ice cream?

The word could is used to request.

1. Could you help me?
2. Could you go there for me?
3. Could you do me a favor?

CLASSROOM ACTIVITIES

• Can i borrow your pencil?
• Could I borrow your pencil?
• May I borrow your pencil?
• Do you mind it I borrow your pencil?
• Could you ask for the address?
• Would you like to go with me to movie?
• May I go to the bathroom?
• Would you mind if Ilike your notebook?
• Do you mind if I study medicine?

COULD,WOULD,CAN AND MAY

We use modal verbs when we want to express ability, suggestion, obligation, prohibition and request.

Example:

We could travel.
They would sleep.
Ana could play the piano at age of 6.