Thinking about the past and present together We use the present perfect if we are thinking about the past and present together. We do not use the...

What is the difference between Affect and Effect? The simplest answer is that “Affect” is a verb while “Effect” is a noun...

We use “able” especially in the structure be able + infinitive. This often has the same meaning as can. There is a negative form...

It is not always easy to know which preposition to use after a particular noun, verb or adjective. Here are some of the most common combinations...

What is the subjunctive? Some languages have special verb forms called ‘subjunctive’, which are used especially to talk about ‘unreal’ situations...

noun • + for… to see infinitives 13: for … to ….5 noun • + infinitive • (e.g. decision to leave) see infinitives 7: after nouns...

an interesting book used as adjectives before nouns, or after be and other a lost dog The upstairs toilet window is broken. His idea seems...

9 indirect questions Whether and if can both introduce indirect questions. I’m not sure whether/if I’ll have time. I asked whether/if she...

1 see, hear, feel, smell, taste When these verbs refer to perception (receiving information through the eyes, ears etc), we do not normally use...