The early study to chemistry. Known as alchemy, grew up in the first few centuries. A.D. at Alexandria in Egypt. The alchemists were especially concerned with discovering a way to turn base metals into gold. The learning of the earlier Greek philosophers. such as Hippocrates and influences on the Egyptian alchemists. Alchemy came under Arab influences on when the armies of Islam conquered Egypt during the seventh century. The Arabs carried its study of Western Europe when they advanced into Spaid. During the twelfth and the following, few centuries alchemy was studied widely in Europe and attract the attention of many learned meds. Although they were doomed to fail in their attempts to make old. their work paved the way for the growth of a great deal of new chemical knowledge which proved to be of considerable value to the future chemists.
In the passage 'considerable' means -
Created: 2 years ago |
Updated: 2 years ago
After help, we can use object + infinitive (with or without to).
| Can you help me (to) find my ring? (NOT | |
| Thank you so much for helping us (to) repair the car. | |
| Our main task is to help the company (to) become profitable. |
Help can also be followed directly by an infinitive without an object.
| Would you like to help pack? |
If you say that you cannot/can’t help doing something (especially in British English), you mean that you can’t stop yourself, even if you don’t want to do it.
| She’s a selfish woman, but somehow you can’t help liking her. | |
| Excuse me – I couldn’t help overhearing what you said. | |
| Sorry I broke the cup – I couldn’t help it. |
Can’t help can be followed by but + infinitive (without to), with the same meaning as can’t help verb + ing. This is common in American English.
| I can’t help but wonder what I should do next. |
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