Speaking Task 1. Choose the question from the card on the topic Entertainment and fedia^ prime prime and be ready to answer it after the teacher starts the conversation. Produce a speech by giving extended answers to the questions. Share your ideas with the class. Teacher organizes a Socratic seminar, which helps him/her to assess learners while they are speaking on the toplic Entertainment and Media and he/she prepares and cuts down questions and expressions beforehand. Learners sit in a circle and answer the question using in their speech some formal and Informal expressions to present logically connected information to their classmates. Expressions: Stating an opinion The way I see it... Sorry to interrupt, but... Is it okay if I jump in for a second? Can I add something here? Can I throw my two cents in? Not necessarily Interrupting If I might add something..... I beg to differ No, I'm not so sure about that That's for sure Expressing disagreement I'd say the exact opposite I have to side with somebody (name)on this one I was just going to say that In my opinion Expressing agreement If you ask me.. That's exactly how I feel As far as I'm concerned. If you want my honest opinion..... You have a point there That's not always the case
Если два треугольника имеют одинаковые высоты, то отношение их площадей равно отношению длин оснований (сторон, на которые опущены эти высоты).
Как это получается?
Объяснение: Диагональ ВD делит параллелограмм площадью 42 ед. на два равных треугольника. Площадь каждого 42:2=21 ед.
Ѕ ∆ АРD = 16 ед (дано), => Ѕ ∆ РВD=21-16=5 (ед).
Треугольники АРD и РВD имеют общую высоту DH. Соответственно:
S(ADP)=AP•DH:2
S(PBD)=PB•DH:2 => S(ADP):S(PBD)=(AP•DH:2):(PB•DH:2) = АР:РВ =>
АР:РВ=S(ADP):S(PBD)=16:5 (см. рисунок приложения).