Free NCERT Solutions
1. Why does an athlete breath faster and deeper than usual after finishing the race? Running a race requires a lot of energy. In order to release more energy more oxygen has to be...
1. The small microscopic units that make up organisms are called…………………. Cells 2. What is the smallest structural and functional unit of an organism? Cell 3. Why do cells need energy? Each cell in...
Write whether the underlined words in the following sentences are finite or non-finite. If they are non-finite, say whether they are infinitives, past participles, present participles or gerunds. Before doing this exercise you may...
It is easy to identify whether a finite verb is an infinitive, gerund or participle. Infinitives usually have the marker to. Examples are: to sing, to work, to break, to stop etc. Present participles...
Finite verbs are those verbs which change their form when there is a change in the number and person of the subject. For example, in the simple present tense, finite verbs take the marker...
A finite verb changes its form where there is a change in the number or person of the subject. Study the examples given below. Shyam works hard. (Here the verb work becomes works because...
Read the following sentences and state whether they are in type 1, type or type 3 conditional. Notes In the type 1 conditional, use a simple present tense in the if clause and will/can/may...
In the type 3 conditional we use a past perfect tense in the if-clause and would/could/might + have + past participle in the main clause. Type 3 conditional or third conditional is used to...
Type 2 conditional is used to talk about imaginary or improbable situations. In the type 2 conditional, we use simple past tense in the if-clause and would/could/might + first form of the verb in...
Complete the following sentences with an appropriate first conditional verb form. Note In the first conditional, we use a simple present tense in the if-clause and will/can/may + first form of the verb (bare...