Hi, I'm Georgina from BBC Learning English. In today's lesson, we look at the differencenoun.差异 between 'unless' and 'as longadv.长期地 as'. 'Unless' and 'as longadv.长期地 as' can be used to replaceverb.取代 'if' in different situationsnoun.形势. Let's have a look at some example sentences. I will go to the party if you come to. I will go to the party as longadv.长期地 as you come to. Both of these sentences have the same meaningnoun.意义. Noticeverb.注意 that the verbnoun.动词 after 'if' and 'as longadv.长期地 as' is positiveadj.积极的.
Now look at these sentences. If you don't do your homework, you can't watch the film. Unless you do your homework, you can't watch the film. Both of these sentences have the same meaningnoun.意义. But noticeverb.注意 that the verbnoun.动词 after 'if' is negativeadj.否定的 and the verbnoun.动词 after 'unless' is positiveadj.积极的. Bye!
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