الخطوة 1اختر الخيار الصحيح
الخطوة 2أضف التدريبات التي تعجبك إلى المفضلة
Don't use for in the sense of about. The chief use of for is to convey the idea of being in favour of. If we say that the teacher spoke for bad habits it's like saying that he/she spoke in favour of bad habits!
Use by (not from) after the passive form to show the doer of the action.
Use for if the actual sum is mentioned, use at if the actual sum isn't given.
If the weight or measure follows the price, use at with the actual sum: That velvet is available at £5 a metre.
Use between for two only. Use among for more than two.
Use on with the days of the week or month: on Friday, on March 25, on New Year's Day. Use at with the exact time: at four o'clock, at dawn, at noon, at sunset, at midnight. Use in with a period of time: in April, in winter, in 1945, in the morning. Also at night and by day.