1.7. Follow-Up
Phrasal Verbs (Funny Stories)
Discuss the caricature. Find the phrasal verb and translate. Draw your own caricature and in a dialogue use phrasal verbs.
UNIT 4. MEDICINAL PLANTS AND OUR PRACTICE AT THE BOTANICAL STATION
This unit includes:
1. Vocabulary: Parts of plants, their medicinal properties, names of plants.
2. Grammar: Continuous Active.
3. Speaking: Talking about medicinal properties of plants.
4. Writing: A short description of medicinal properties of plants (using linking words/phrases)
I can describe medicinal plants
PART I.
SPEAKING AND VOCABULARY
Lead - in
Exercise 1. Look at the photos, guess what plants are there. What do you know about these plants?
Сhamomile; Coltsfoot; Sunflower; Yarrow; Valerian. ;Valerian
1.
2.
3.
4.
5.
Useful phrases: - In picture 1 I can see …
- I think/ guess/ suppose this is …
- I’m not sure what it is …
Exercise 2. Complete the sentences with the words from the box:
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stem rhizomes seeds florets bipinnate tripinnate receptacle inflorescence cluster head smell perennial annual herbaceous flowering flowers |
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Chamomile has a branched … which is erect and smooth. The long and narrow leaves are … or tripinnate. The ray … are white, while the disc florets are yellow. The hollow … is swollen. The flowers bloom in early to mid summer and have a strong aromatic … .
Coltsfoot is a … … plant that spreads by … and … .
Sunflower is an … plant. It possesses a large flowering … . It has a rough, hairy stem, broad, coarsely toothed, rough leaves and circular heads of flowers.
Yarrow’s leaves are 5–20 cm long, bipinnate or …, almost feathery, and arranged spirally on the stems. The … is produced in a flat-topped … .
Valerian is a perennial … plant, with heads of sweetly scented pink or white …, which bloom in the summer months.
Exercise 3: Complete the text using the words and phrases:
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pharmacognosy tumors plant habitats investigate |
exist derived reduce thanks to |
trial and error aches ingredient kingdom |
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Medicinal plants
Valerian, ginseng, echinacea, chickweed - visit your local drug store or supermarket and you'll find large quantities of these products on the shelves, intermingled with old favorites like aspirin. Medicinal plants are used commercially, ___________ contributions of traditional cultures worldwide, modern medicine, and _____________.
W
ithout
plants, most medicines you take would not _____________. Over 40% of
medicines now prescribed in Russia contain chemicals _____________
from plants.
Historically, plant medicines were discovered by_____________. Our ancestors noticed that __________and pains went away when they drank tea made from the bark of a willow tree. Later, scientists found that willow bark contains salicylic acid, the active ______________ in aspirin.
This process continues today. Throughout the world, including the wild places in Russia, botanists and chemists search the plant ___________ for new medicines. They sometimes find treasures in other people's trash. For years, the native Pacific yew was burned as trash generated by logging operations in the Pacific Northwest. In 1975, a substance in its bark, taxol, was found to ___________ the production of cancerous ____________.
A comprehensive search of known plants for medicinal chemicals is an enormous task. Of the estimated 250,000 plant species on earth, only 2% have been thoroughly screened for chemicals with potential medicinal use. Because native ____________ are destroyed almost daily, many medicinally valuable plants will be gone before scientists can even ___________ them.