单词perfect-continuous
网络: 完成进行时；完成进行体；完成进行式
A. Fill in the blanks with the present perfect continuous tense of the verbs in brackets.
试用括号里动词的现在完成进行时态填充空格。
Present Perfect or present perfect continuous?
现在完成时和现在完成进行？现在完成时和现在完成进行？
B. Rewrite the following sentences, using the present perfect continuous tense of the verbs in brackets.
重写以下的句子，并用括号里动词的现在完成进行时态。
3 (2) + Perfect continuous implementation with weekly, monthly, quarterly &yearly follow up.
完善地连续每周，月，季，年执行有关改善行动。
for some time, you use the present perfect continuous.
现在完成时态用以强调最近发生的事件持续一段时间。
the future perfect tense ? the past future perfect tense ? the present perfect continuous tense ? the past perfect continuous tense ?
将来完成时将来完成时？过去将来完成时过去将来完成时？现在完成进行时现在完成进行时？过去完成进行时过去完成进行时完成进行？
We use the future perfect continuous tense to talk about how long an action will be going on at a future time.
我们用将来完成进行时态来形容一个行动在未来特定的时间里已进行多久了。
We use the past perfect continuous tense to show that an action started in the past and continued up until another time in the past.
我们用过去完成进行时态来形容一个在过去开始的行动，这个行动持续到过去的另一个时间。
They have done color printing in China since the 12th century. Present Perfect Continuous Tense
自12世纪以来，中国就使用彩色印刷了。
Appointment of the Perfect Continuous
约会完成进行时