English for Biology Teachers
Grammar Battle .
1. Pay attention to these sentences below.
People started emitting large amounts of greenhouse gases. S V
O The above sentence is called simple past tense sentence. Simple past tense is used when we
talk about event in the past and past habit. The rule is:
The difference between simple present tense and simple past tense is lying on verbs used in sentences.
S + V2 + …
See the examples below ¾ I study
everyday. simple
present tense
She studied last night. simple past tense
¾ We go to Parangtritis beach. simple present tense
They went to the cinema last night. simple past tense
¾ I am able to do the homework. simple present tense
He was able to do break-dance. Simple past tense
2. Underline simple past tense sentences in text entitled “The Greenhouse Effect”
3. Find five simple present tense sentences in the text and change them into simple past tense sentences
Completing Mission .
1. Read another kind of reading passage below
Save Energy and Money at Home
The energy we use at home accounts for about a fifth of U.S. global warming pollution. That means making smart choices at home matters.
Heating and cooling This is a top home energy user, with the average household producing about four tons of heat-
trapping pollution a year. It is heavily influenced by weather. For example, a relatively cold 1996 led to an increase in heat-trapping emissions compared to the previous year. But the next year, a
warmer winter helped emissions dip bit. Warmer summers increase greenhouse gas pollution, too, from heavy air conditioning use. Despite the relative warm or coolness of the season, the U.S. emits
a harmful amount of global warming pollution. Even as the weather varies, your choices can help spew less global warming
pollution. In summer, keep shades drawn to keep the cool in.
In winter, open shades to let the sunlight to help warm rooms. In winter, keep your thermostat cooler at night or when the house is empty.
Install a programmable thermostat to heat and cool rooms only when necessary. Plant trees around your house to cut cooling costs in summer.
Insulate your walls and ceilings. Install a light-colored or reflective roof.
Appliances
After heating, refrigerators and freezers are generally the homes next two big energy eaters. Other appliances follow closely. Together, these items account for nearly eight tons of heat-trapping
emissions per household per year. Upgrade to Energy Star products. Not all appliances are equal. Whether youre in the market for a
new fridge, toaster or air conditioner, look for Energy Star choices, which offer the best energy savings.
Size counts. When in the market for an appliance, make sure you buy what suits your needs. Items too large or too small waste electricity and your money.
Unplug. Your electric meter is often adding up kilowatt hours when you don’t think you’re using an appliance. Unplug toasters and cell phone and other chargers when they’re not in use. Dont use air
fresheners that have to be plugged in. Use power strips. Cable boxes and video game boxes, and to a lesser extent TVs and VCRs, use
almost as much energy when theyre off as when theyre on. Make it easy to turn them all the way off—plug them into a power strip and turn off the whole strip.
Lighting Lighting accounts for about 21 percent of commercial energy consumption and about 12
percent of home energy consumption. In terms of heat-trapping pollution, that means the lights in the average household produce just over a ton of carbon dioxide each year. Here are a few steps to
lower those numbers.
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