The concept and structure of adverbial clauses

1. Conceptual adverbial clauses modify verbs, adjectives, adverbs, etc. Be an adverbial in the main sentence and an adverbial in the complex sentence. The conjunctions that lead adverbial clauses are subordinate conjunctions. Adverbial clauses are arranged in the order of declarative sentences, usually at the beginning or end of complex sentences. When a clause is at the beginning of a sentence, it is often separated from the main sentence by a comma. Adverbial clauses indicate time, place, reason, purpose and result respectively according to their different functions in sentences. Behavior, etc. 2. Related knowledge points 1. Positional adverbial clauses Positional adverbial clauses are usually guided by where and where. For example, there are many trees where I live. There are many trees where I live. No matter where I am, I will think of you. Wherever I am, I will think of you. 2. Mode adverbial clauses Mode adverbial clauses are usually guided by as, (just) as … so …, if, as through. 1) as, (just) as ... Therefore, adverbial clauses are usually located after the main sentence, but at the beginning of the sentence (just) is ... therefore ... structure. At this time, the As clause has a figurative meaning, indicating "just like" and "just like", which is often used in formal style. For example, don't do to others what you don't want them to do to you. Treat others as you want them to treat you. Just as water is to fish and air is to man. We can't live without air, just as fish can't live without water. Just as we clean the room, we should also sweep away the backward ideas in our minds. Just like cleaning the house, we should also sweep away the backward things in our minds. 2) as if and as through have the same meaning and usage. Adverbial clauses are mostly subjunctive, which means contrary to the fact, and sometimes declarative, which means that the situation is a fact or is likely to be realized. Chinese translation is often "like" or "like". For example, they completely ignore these facts as if they completely ignore them as if they don't exist. Contrary to the fact, this predicate is subjunctive. He looks as if he had been struck by lightning. He looks as if he had been struck by lightning. Contrary to the fact, this predicate is subjunctive. It seems that the weather may get better soon. It seems that the weather will get better soon. It is more likely to be realized, and the predicate is declarative tone. ) explanation: as if/as if can also guide participle phrases, infinitive phrases or verb-free phrases. He stared at me as if he had seen me for the first time. He stared at me as if he had seen me for the first time. He cleared his throat as if to say something. He cleared his throat as if to say something. The waves hit the rocks as if they were angry. The waves beat against the rocks as if they were angry. 3. The adverbial clause of reason is the strongest. Because it is used to explain unknown reasons and answer questions about why. When the reason is obvious or known, use as or since. I didn't go because I was afraid. I didn't go because I was afraid. As the weather is so bad, we have to postpone our trip. The weather was so bad that the trip was postponed. 2) If the clause led by is placed at the end of the sentence and there is a comma in front of it, you can use for instead. But if you don't explain the direct reason, but infer it from many situations, you can only use for. He is absent today because he is ill. He is absent today because he is ill. He must be ill, because he didn't come today. He must be ill, so he didn't come today. 4. the adverbial clause of purpose indicates that the adverbial clause of purpose can be guided by words like that, so as to, so as to, rest, fear, in case, etc. For example, you must speak loudly so that everyone can hear you. You must speak loudly so that others can hear you. He wrote down his name so as not to forget it. He wrote down the name lest he should forget it later. You'd better take more clothes in case it gets cold. You'd better put on more clothes in case it gets cold. 5. Adverbial clauses of results are often guided by so…that or so … that. So ... that and that ... can be converted. The boy is too young to go to school. The boy is too young to go to school. He is too young to go to school. Conditional adverbial clauses mainly include if, never, as/ as long as, on condition that and so on. There are two kinds of conditional sentences guided by if: true conditional sentences and false conditional sentences. Unreal conditional sentences have been elaborated in subjunctive mood. Never = if not. For example, we should never go out for a walk. If you are not too tired, let's go for a walk. If you are not too tired, let's go out for a walk. Typical example: you will be late-you leave at once. Unless you leave at once, you will be late. If you leave at once, it will be too late. The meanings of sentences B and D are incorrect, or they are transferred. For example, the sentence is that you leave at once, or you will be late. 7. The adverbial clause 1) Through, the adverbial clause guided by which, and the following clause cannot have but, but Through and yet can be used together. Although it is raining, they are still working in the fields. Although it is raining, they are still working in the fields. He is very old, but he still works very hard. Although he is very old, he still works hard. Although the wound has healed, it will still leave a scar. Although the wound has healed, the scar still exists. (Proverbs) 2) Concession clauses guided by 2)as and through must be preceded by predicative or adverbial (adjectives, adverbs, participles and notional verbs). Child as he is, he knows what to do. Child as he is, he knows what to do and what not to do. 3) Once if, even if. For example, even if the weather is bad, we will travel. Even if the weather is bad, we will go hiking. 4) Where ... or ... whatever ... for example, believe it or not, it's true. Believe it or not, it is true. 5) "No matter+interrogative words" or "interrogative words+suffix once". For example, whatever happens, he won't mind. Whatever happens, he doesn't care. Replacement: No matter what, no matter who, no matter when, no matter where, no matter where, no matter where, no matter where. Note: subject clauses and object clauses cannot be guided under any circumstances. 8. Compare the verbs that while, when, as 1)as and when lead to instantaneous action. Just as I was parking, a man came up to me. As soon as I braked, a man came towards me. 2) when the action of a clause occurs before the action of the main clause, you can only use when to guide the clause, not as or while. For example, you can have a rest after you finish your work. You can have a rest after you finish your work. 3) The clause indicates that the conjunction "over time" can be used instead of when or while. For example, as time goes on, the weather gets worse. 9. Comparing till and till, these two conjunctions have the same meaning. The affirmative means "do something until a certain time", and the verbs must be continuous. Negative expression means "Don't do something before a certain time". Verbs can be continuous or discontinuous. One of the keys to correctly use these two conjunctions is to judge whether the verbs in a sentence should be positive or negative. I slept until midnight. I slept until midnight. Wait for me to call you. Wait for me to call you. (before can be used instead in affirmative sentences. She didn't arrive until 6 o'clock. She didn't arrive until 6 o'clock. Don't get off the bus until it stops. Don't get off the bus until it stops. I can't do it unless you explain clearly how to do it. I won't do it unless you teach me. Difference: 1)until can be used at the beginning of a sentence, while till is generally not used at the beginning of a sentence. I knew nothing about what happened before you told me. I didn't know what happened until you told me. 2) In interrogative sentences, Never should not be placed at the beginning of the sentence. For example:-When will you live? How long will you stay? -Until next Monday. Stay until next Monday. Note: Negative sentences can be expressed in two other sentence patterns. 1) Up to the beginning of the sentence. For example, it was not until the early19th century that humans knew what heat was. It was not until the beginning of19th century that human beings knew what heat was. I didn't realize how much time I wasted until I started working. I didn't realize how many years I had wasted until I worked. It was not until ... For example, it was not until I started working that I realized how much time I had wasted. 10.hardy/ almost ... ……when/before, not before……than and only can all mean "a ...". Hardly had I got home when it began to rain. Hardly had I got home when it began to rain. Hardly had I got home when it began to rain. Hardly had I got home when it began to rain. Note: if you put hardly, congress or note at the beginning of a sentence, the sentence must be inverted. Hardy/ It began to rain as soon as I got home. Hardly had I got home when it began to rain.