Discuss what has changed in the last twenty years in Guangzhou past tense and perfect tense.

Don't start a paragraph in past tense and finish it in the future.

不要一句话的开头使用“过去时”,结束时却使用“未来时”.

It was an academic exercise, a query set in the past tense.

这是一次学术练习, 提出的问题是过去已经发生了的.

TRICK QUESTION! They are simply testing whether you can use the past tense correctly!

技巧问题! 他其实是在测试你是否会运用过去式回答!

VOICE : I notice you about that theory in the past tense.

我注意到了你是用过去时态来谈论那个理论.

Write the following sentence in the simple past tense, past progressive tense and future tense.

请将下面的句子改写成一般过去时, 过去进行时和一般将来时.

The past tense of ‘take ’ is ‘took ’.

take的过去式是took。

Results Under the polarization microscopy, the perimysium consisted mainly of collagen type ⅰ. After limb lengthening, the percentage of collagen type ⅲ increased.

结果在偏光显微镜下正常肌束膜主要由Ⅰ型胶原构成，肢体延长后，Ⅲ型胶原相对含量增加，而延长速率1mm/d的肌束膜胶原构成最接近正常；

A System for Measurement of Line Width by Combining Polarization Interferometry with Confocal Microscopy

用于线宽测量的偏振干涉共焦显微测量方法

The application of sirius red stain and polarization microscopy method in the fibrotic research of hypertrophic scar and keloid

天狼猩红偏振光法在病理性瘢痕纤维化研究中的应用

Vibrating mode scanning polarization force microscopy and its applications

振动模式扫描极化力显微镜及其应用

Spin polarization electron microscopy and Monte-Carlo simulation

自旋极化电子显微术及蒙特卡罗模拟

Methods The degrees of fibrosis in normal skin, hypertrophic scar and keloid tissues were detected by Sirius red staining and polarization microscopy method. The SABC immunohistochemistry method and image analysis technique were employed to detect the expression of connective tissue growth factor.

方法分别留取正常皮肤、增生性瘢痕和瘢痕疙瘩组织标本，应用天狼猩红偏振光法检测组织纤维化程度，应用SABC免疫组织化学法和图像分析技术检测组织中结缔组织生长因子的表达。

The electrochemical corrosion behaviors of aluminium and titanium/ alumin-ium dual coatings on uranium surface, in potassium chloride solution with 50 μ g/ g Cl~-, were studied by potentiodynamic polarization and scanning electron microscopy ( SEM).

采用动电位极化技术和扫描电镜（SEM）对U表面Al及Ti/Al双重镀层在含50μg/gCl的KCl溶液中的电化学腐蚀行为进行研究。

The mesophase microstructures in the pyrolyzed residue at successive temperature and time intervals were examined with a polarization microscopy and the mechanism of mesophase transformation was revealed.

用偏光显微镜观察了在不同转化温度和不同停留时间时的中间相显微结构，从中间相显微结构的变化来探讨中间相转化机理。

The influence of Bi~ ( 3+) and tetrabutylammonium bromide ( TBAB) on the dendritic growth behavior of secondary zinc electrode in the alkaline zincate solution was investigated by means of current-time technique, potentiodynamic polarization and scanning electron microscopy.

采用电流-时间曲线、极化曲线和扫描电子显微镜等方法，研究了Bi3+与四丁基溴化铵（TBAB）对可充锌电极在碱性锌酸盐溶液中枝晶生长行为的影响。

The spindle morphological change was observed by immunofluorescence staining and confocal microscopy.

免疫荧光及激光共聚焦显微镜观察MKN45细胞微管改变，流式细胞仪检测MKN45细胞周期及凋亡的变化；

An Improved Immunofluorescence Microscopy for Observing Microtubule Cytoskeleton in Plant Cells

一种改进的观察植物细胞微管的免疫荧光染色方法

Methods The human placental villus-derived trophoblastic cell line ( HPT-8) in vitro was identified and assayed by light microscope, scanning electron microscope, transmission electron microscope, immunohistochemistry and immunofluorescence laser confocal microscopy.

方法通过光镜、扫描电镜、透射电镜、免疫组化和免疫荧光激光共聚焦的方法对体外培养出的HPT-8进行系统鉴定评价。

CD41 specific monoclonal antibody staining was observed by immunofluorescence microscopy.

利用CD41单克隆抗体免疫荧光染色观察培养体系中的细胞情况。

Methods Reverse transcript polymerase chain reaction ( RT PCR), immunofluorescence microscopy and immunohistochemistry methods were used to detect P120 catenin expression in the cells and tissues mentioned above.

方法采用RT-PCR、免疫荧光标记（激光共聚焦显微镜）和免疫组织化学分析，分别对正常肝细胞、肝癌细胞、正常肝组织和肝癌组织中P120ctn进行检测。