1,I have finished a large part of the novel written by Dickens,the rest of which (is) very difficult.2,It was (he) who did it,but it is (her) that we are thinking of.3,Three-fourths of the surface of the earth (is) covered with water.4,This is the th

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1,I have finished a large part of the novel written by Dickens,the rest of which (is) very difficult.2,It was (he) who did it,but it is (her) that we are thinking of.3,Three-fourths of the surface of the earth (is) covered with water.4,This is the th
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1,I have finished a large part of the novel written by Dickens,the rest of which (is) very difficult.2,It was (he) who did it,but it is (her) that we are thinking of.3,Three-fourths of the surface of the earth (is) covered with water.4,This is the th
1,I have finished a large part of the novel written by Dickens,the rest of which (is) very difficult.
2,It was (he) who did it,but it is (her) that we are thinking of.
3,Three-fourths of the surface of the earth (is) covered with water.
4,This is the third time whis week he has had to study late,(isn’t it)?
5,She is in a poor (state) of health,which worries her mother much.
请解释一下为什么要这样填扩号里的词~

1,I have finished a large part of the novel written by Dickens,the rest of which (is) very difficult.2,It was (he) who did it,but it is (her) that we are thinking of.3,Three-fourths of the surface of the earth (is) covered with water.4,This is the th
1,I have finished a large part of the novel written by Dickens,the rest of which (is) very difficult.
这个is是由the rest of 决定的 所以是单数is
2,It was (he) who did it,but it is (her) that we are thinking of.
强调句,强调的就是括号里的he,而且这个he是先行词引导后面的定语从句who do it
3,Three-fourths of the surface of the earth (is) covered with water.
这个单数的is是由the earth 决定的,参见第一题
4,This is the third time whis week he has had to study late,(isn’t it)?
反义疑问句,因为前面说的是This is the third time
用的是is ,后面也要相应的用is
5,She is in a poor (state) of health,which worries her mother much.
a poor state of health,这个是固定搭配,用于说健康状况的时候就用state

请问这句应该是have finished还是finished?The moment I (have) finished I’ll give you a call. Have you finished your homework Yes,I __it in twenty minutes.选 A.have finished 还是 B.finished 为什么? I have a ( ) finished my work如题,填空. ( ) you( ) your homework?yes,I finished it an hour ago.A did finish B have finished C.had finished I have just finished it Have you finished this work___?Yes,I have.I've finished it.Have you finished this work___?Yes,I have.I've finished it.A.yet,ever B.already,never C.yet,just D.either,just I ____ the DVD you lent me,but look,I have so many papers to write.A.can have finished B.must have finished C.could have finished D.should have finished 32、I have finished my homework,Mom.May I st32、I have finished my homework,Mom.May I stop ________ (have) a rest? Have you finished you composition already?yes,I ()it in twenty minutesHave you finished you composition already?Yes,I ( ) it in twenty minutes.A have finished B finished C will finish D had finished 请说明一下原因 i have finished可否省略have Have you finished your homework?Yes,i(_)it just now.A(FINISH)B(HAVE FINISHED)C(FINISHED)D(WILLFINISH) ( )-----______ you _______ your homework yet?- ----Yes,I _______ it a moment ago.A.Did;do;finished B.Have;done;have finished C.have;done;finished D.Will;do;finished I()my homework at seven o`clockI ()my homework at seven o`clock A finished B have finished Have you ______ my knife?A.finished upB.finished offC.finished inD.finished with I( )playing tennis when Tom and George arrived括号内该填A.had finished B.have finished C.finish D.finished哪个呢?不管怎样, He told me he would ____ by the time I got back.A.finish B.has finished C.had finished D.have finished I have finished the essay at last. I have finished my homework.反义疑问句