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Take a short test to measure and increase command of grammar points explained elsewhere in this blog
DESCRIPTION OF THE TEST
This post offers a different kind of test from that in the two earlier Guinlist posts with a title like the above (see 138. Grammar Command Test 1). It presents isolated single or paired sentences and invites rephrasing of each using given wording. Rephrasing involves one or more grammar points from elsewhere within this blog, which are revealed and explained when answers are given.
As the other grammar-testing posts point out, the word “command” better describes the aim of grammar activities than “knowledge” because it suggests, in addition to knowledge of grammar rules, skill in their use. Knowledge alone of grammar rules in a new language is known to be insufficient for avoiding errors from the fact that most people who spend a lot of time and energy acquiring it through memorisation still often make mistakes in real communication (see 202. Some Strategies for Learning English).
Tests that use “rewrite sentences” are not a perfect way of proving command of grammar, but they do seem to have some value in this respect. They also have the value of practising the right way to perform the key skill of paraphrase (see 80. How to Paraphrase).
For a test of appropriacy rather than grammar, see 193. A Test of Formal Language Use. For one of vocabulary, see 273. Verb-Object Collocations.
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THE TEST SENTENCES
How can each highlighted statement below be rephrased so as to accommodate the wording shown next to it? Answers are in the next section.
(a) Kilimanjaro is the highest mountain in Africa.
Kilimanjaro is higher…
(b) Computers are located on the upper floor.
The floor…
(c) Industry pollutes in many ways. For example, it discharges effluents.
…such as…
(d) It is not very difficult for cats to climb trees.
Cats do not…
(e) Granite outlasts most other stones.
The durability…is…
(f) Some argue that even electric vehicles cause pollution.
…are argued…
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ANSWERS AND EXPLANATIONS
(a) Kilimanjaro is the highest mountain in Africa.
⇒ Kilimanjaro is higher than any other mountain in Africa.
Use in the original sentence of a superlative adjective (highest) indicates that the noun it describes (Kilimanjaro) is being compared with more than one fellow members of its category, mountains in Africa (see the introduction to 305. Wording next to Superlatives). Higher, by contrast, indicates a comparison with just one.
The task, therefore, is to find an expression that allows a comparison with just one idea within the same category rather than a group. This is done above by adding any before mountain, but it could instead be done with all (+ plural mountains).
The word other is a further important addition: without it, there is a suggestion that African mountains exclude Kilimanjaro – that the latter might be in Asia or America, for example, or even be a high building rather than a mountain. Other is not needed in the original sentence because the status of Kilimanjaro as a mountain in Africa is more clearly shown there by is in between (see 220. Features of Complements, #1). For more about other as a category indicator, see 170. Logical Errors in Written English, #4.
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(b) Computers are located on the upper floor.
⇒ The floor where computers are located is the upper one.
In the original sentence, the adjective upper is just before its noun floor. Starting with the floor, however, requires upper to come later, with a link verb like BE in between (see 283. Lesser-Known Features of Adjectives).
The link verb here, added alongside the existing one are located, is is. The result of this addition, the presence of two verbs together in the same sentence, creates a need for special verb-accommodating wording that I have elsewhere called a “joining device” (see 30. When to Write a Full Stop). The joining device above is the conjunction where. One could also say The floor containing computers…, where the joining device -ing is attached to a suitable verb without BE in front.
A third possibility is to paraphrase the original verb are located with wording that includes no verb at all, so that all need for a joining device is removed. A simple way to do this is with a preposition phrase (The floor with computers is…).
A second consequence of starting with the floor is a need for the…one with upper. Although, most adjectives can be placed after BE without needing extra words, upper always needs one or ones after it (or kind if describing an uncountable noun). For more about adjectives with this need, see 184. Adjectives with Limited Mobility, especially #4.
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(c) Industry pollutes in many ways. For example, it discharges effluents.
⇒ Industry pollutes in many ways, such as by discharging effluents.
Here, an illustration is worded in two different ways. The idea of “illustration” is indicated first by for example and subsequently by such as. Moreover, for example is in a new sentence after its associated generalization whereas such as is not.
The reason for this latter difference is the grammatical properties of the two expressions. For example is being used as a “connector”, an expression that shows a meaning link between two verb-based statements without combining them physically into a single sentence; whereas such as is a preposition, only able to show a meaning link between nouns inside a single sentence (see 1. Simple Example-Giving).
The preposition status of such as creates a further restriction too: any verb after it needs the -ing (gerund) form rather than a tense-showing form like discharges in the original sentence (see 70. Gerunds, #2). In the above example, discharging also needs by in front. This is because such as is introducing an adverb-like phrase saying how the action of the verb in its sentence (pollutes) occurs (see 73. Prepositions for Saying How).
One other point about for for example is that it is much less restricted than such as. Although such as cannot be used like for example in the original sentence, for example could easily replace such as in the rephrasing. In other words, for example has both a connector and a preposition use (see 226. Words with Complicated Grammar 2, #4).
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(d) It is not very difficult for cats to climb trees.
⇒ Cats do not find it (to be) very difficult to climb trees.
⇒ Cats do not have much difficulty (with) climbing trees.
Placing cats, the subject of the infinitive verb to climb, before the idea of “difficult” necessitates the use of a verb that can logically and typically link the two. One is find, as in the first rephrasing; the other is have, as in the second. With both, the not originally negating very difficult has to negate them instead.
Cats do not find… requires most of (d) to follow as an object. The starting it can be kept, either between that…is or without these words and optionally followed by to be. Next comes very difficult (without not because that is now at the start), followed by to climb trees (without for cats). For more on converting it sentences into the object of another verb, see 190. Special Uses of “it”, #2.
Using have, by contrast, requires the removal of it and use of the noun difficulty (as the object of have) instead of the adjective difficult. This change necessitates two others: adjective-requiring very before difficult must become noun-allowing much before difficulty; and the verb to climb must become climbing, optionally after with.
It may seem strange that a verb after difficulty should require a different form from one after difficult. There are indeed plenty of examples where a to verb is needed both times (e.g. after able/ ability, free/ freedom and willing/ willingness. However, it is surprisingly common for a noun and its related adjective to require different forms of the same dependent verb, other examples being possible (+ to) versus possibility (+ of…) and useful (+ to) versus usefulness (+ of…) (see 78. Infinitive versus Preposition after Nouns).
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(e) Granite outlasts most other stones.
⇒ The durability of granite is better than that of most other stones.
The prefix out– in verbs usually means “better than” (see 146. Some Important Prefix Types, #3). Thus, the verb outlasts means “lasts better (= longer) than”. Its subject and compulsory object name the two compared ideas.
If the idea of lasting is expressed with a starting noun (durability), that becomes the focus of the comparison, so that two types of durability are being compared rather than two stone types. Each type is indicated by words after durability: of granite in the first case, of most other stones in the second. To avoid repetitiveness, the second use of durability can be replaced by the pronoun that (see 63. Constraints on Using “the one(s)).
The idea of “better than” after durability can be expressed with either an adjective like better (+ than) or the preposition beyond (without than). Their association with durability is best shown by means of a link verb like BE (is above).
Using a verb like outlasts in (e) illustrates how ordinary vocabulary can quite often replace a grammar structure expressing a particular meaning (here -er than in comparisons: see 298. Grammar Meanings without Grammar, #8).
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(f) Some argue that even electric vehicles cause pollution.
⇒ Even electric vehicles are argued by some to cause pollution.
Sentence (f) reports a statement in the common manner by placing it after a mention of its source (some) followed by a reporting verb (argue) + that…. In the rephrasing, by contrast, the passive form of the reporting verb has as its subject the wording that was originally the subject of the verb in the reported statement (electric vehicles).
This change necessitates putting the replaced subject (some) into a by phrase after argued, and giving the verb in the reported statement the to (infinitive) form (to cause). Such rephrasing is quite commonly possible with verbs that report statements with that (see 299. Infinitives after a Passive Verb, #2).
The meaning of by some in the rephrasing could alternatively be expressed with the adverb sometimes, positioned either in the same place or at the start of the sentence.