Методическая разработка по английскому языку для студентов факультета химии и химической технологии " Simple Chemistry" Алматы 2017
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мет. разработка по химии
- Бұл бет үшін навигация:
- Could
- Might /may
| Unit 11
Modal verbs: can, could, may, might Can:Positive Form: I can readNegative Form: I cannot (can’t) read. Questions: Can you read? When we use this modal verb: to express ability (to be able to do something): I can make jewelry. He can’t speak French. Can you open this jar? To ask for permission: Can I use your bathroom? To make requests or suggestions: Can I have more napkins? Can I have the bill? You can take this spot if you like. You can do whatever you want. Could:Positive Form: I could readNegative Form: I couldn’t read. Questions: Could you read? When we use this modal verb: to describe an ability that someone had in the past: I could swim when I was young. You could see the boat sinking. They could tell he was nervous. In auxiliary functions to express permission politely: Could I take this jacket with me? You could borrow my umbrella. Could you please let me pass you? Could I get you more water? To express possibility: All of them could ride in the van. You could always stay at our house. Could it be true? This plan could really work out. The difference between can and could is that we use could instead of can when we are not sure in something. For example: He could be right. Might /mayPositive Form: I might (may) come soon.Negative Form: I might not (may not) come soon. We use may to ask for formal permission: May I come in? May I say something now? May I ask one question? We can use might in this type of questions but it will be formal: Might he be persuaded to change his mind? When we talk about probability we can use both might and may. For example: She may come tomorrow. Or She might come tomorrow. In past simple the modal verbs might and may have the following form: may/might + have + Ved(V3). For example: I might /may have seen him yesterday. We use can in positive sentences when we talk about general possibility of something happening while we use may/might/could when we talk about the possibility of something happening in a particular situation. For example: The temperature in June can reach 30 o C. It may/might/could rain later. We prefer may rather than can in formal contexts, for example: Exceeding the stated dose may cause drowsiness. (from medical container). We use might when we talk about small probability. Vocabulary a hydrocarbon углеводород hydrogen водород carbon углерод to consist of состоять из to remove удалять to be removed быть удаленным hydrocarbyl гидрокарбил, нециклический углеродный остаток aromatic ароматический arene арен alkane алкан alkene алкен cycloalkane циклоалкан majority большинство crude oil сырая нефть organic chemistry органическая химия as follows следующий saturated hydrocarbons насыщенные углеводороды simple простой to be composed of состоять из to saturate with насыщать saturated насыщенный unsaturated не насыщенный acyclic saturated hydrocarbons ациклические насыщенные углеводороды a general formula распространенная формула a ring кольцо the number число a basis основа petroleum fuels нефтяное топливо linear линейный branched разветвленный substitution reaction реакция замещения structural isomers структурные изомеры the same одинаковый chiral киральный to constitute составлять side chains боковые цепи chlorophyll хлорофилл tocopherol токоферол, витамин Е methane метан propane пропан liquid жидкость hexane гексан benzene бензол known as известный как wax воск low melting solids легкоплавкие твердые тела paraffin wax парафиновый воск naphthalene нафталин a polymer полимер polyethylene полиэтилен polypropylene полипропилен polystyrene полистирол at least по крайней мере 3-methylhexane 3-метилгексан impurity примесь kerosene керосин жүктеу/скачать 422,31 Kb. Достарыңызбен бөлісу:
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