高中英語unit2cloning教學(xué)設(shè)計2新人教版選修8(編輯修改稿)
2025-01-10 06:12 本頁面
【文章內(nèi)容簡介】 ly resembles another, as in appearance or function: filled with businessschool clones in gray and blue suits Michael M. Thomas. v. cloned, cloning, clones 1. To make multiple identical copies of (a DNA sequence). 2. To create or propagate (an anism) from a clone cell: clone a sheep. 3. To reproduce or propagate asexually: clone a plant variety. 4. To produce a copy of。 imitate closely: The look has been cloned into clich233。 Cathleen McGuigan. 2. Prereading by questioning and answering What is cloning? We define cloning as production of a cell or anism with the same nuclear genome as another cell or anism. Cloning is the process of creating an identical copy of an original. A clone in the biological sense, therefore, is a single cell (like bacteria, lymphocytes etc.) or multicellular anism that is geically identical to another living anism. Sometimes this can refer to natural clones made either when an anism reproduces asexually or when two geically identical individuals are produced by accident (as with identical twins), but in mon parlance the clone is an identical copy by some conscious design. Also see clone (geics). The term clone is derived from the Greek word for twig. In horticulture, the spelling clon was used until the twentieth century。 the final e came into use to indicate the vowel is a long o instead of a short o. Since the term entered the popular lexicon in a more general context, the spelling clone has been used exclusively. 3. Reading aloud to the recording Whole language teachers affirm that reading aloud teaches you the students about language in a way that silent or independent reading never can. Reading aloud to the tape helps you the students develop and improve language skills reading, writing, speaking, and listening. And since you the students listen on a higher level than you read, listening to other readers stimulates growth and understanding of vocabulary and language patterns. So why not hurry to listen and read to the taperecording of the text we are going to learn today? 4. Reading for forms Read the text again to: cut/ the sentence into thought groups, blacken the predicates, darken the connectives and underline all the useful expressions. 5. Reading for the type of writing and summary of CLONING： WHERE IS IT LEADING US? Determining the type of writing will help you determine the author’ s topic (subject), purpose (why he is writing), style (how he should write) and tone (his attitude toward his subject supportive, condeming, objective, etc.) It is important to find main ideas when reading. Main ideas help you remember important information. The main idea of a paragraph tells the topic of the paragraph. The topic tells what all or most of the sentences are about. The other sentences in the paragraph are called details. Details describe or explain the main idea. Read the text to find the main idea. CLONING： WHERE IS IT LEADING US?
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