Will:Question 2: As we have just said, the present perfect simple and continuous can have the same use. However, sometimes the present perfect continuous cannot be used but the present perfect simple can. Why? (并不理会)第二题:就像我们刚刚讲过的,现在完成时和现在完成进行时可以被用来表达一样...
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GRAMMAR - How to use the present perfect continuous tense-70w98yeKj74 06:12 Grass phone. Learn - to stand out from the crowd, device, internal components, o 02:30 How to ask for directions and how to give directions-hKLhepR2KY4 06:16 The Race - Start the clock. Learn to use the ...
a) The formula is: if + present simple + will + infinitive b) First conditionals are used for possible present or future consequences c) The ‘if’ clause can be at the beginning of the sentence or in the middle d) You can use the present simple, continuous or perfect tense in the ...
‘if’ clause can go at the beginning of the sentence, or in the middle. And finally, it is possible to use the present simple, continuous or perfect tenses. For example: If I play football, I will be healthy. If I’m...
A.simple present tense B.present perfect continuous tense C.simple past tense D.past perfect tense 答案解析:B。“has been conducting”是现在完成进行时态,表示从过去某一时间开始一直持续到现在的动作,并且可能还会继续下去。A、C、D选项都不符合。 17.The book that he recommended is very useful. This...
"Have been doing" 是一种现在完成进行时态(Present Perfect Continuous Tense)的动词形式。这种时态用于描述从过去某一时间点开始,一直持续到现在,并且可能仍在进行的动作或状态。它强调动作的持续性和不完整性,即动作还没有结束或可能仍然在进行中。 例如: I have been studying English for five years. (我已经...
Based on the three possibilities above, you can now see that the present perfect continuous can be used in three different ways. Usage #1: Ongoing Activity The first way—describing an activity that has been going on for a while and is still continuin...
WHITEHURSTThe one continuous element throughout all of this is having really great artists with really great eyes making those choices with Robert and me. And we had an enormous amount of reference material from earlier Indy films, which we got scanned, and we could use that and we could fra...
The "if" clause can go at the beginning of the sentence, or in the middle. And finally, it is possible to use the present simple, continuous or perfect tenses. “If” 从句可以放在句首或者句中。最后,“if” 从句是有可能用一般现在时,进行时或完成时的。