引言（Introduction） 

* 文章的目的

1. A major (primary, main) motivation (objective, aim, goal, purpose, concern) for (of) this work (research, study)  is to address (investigate, explore) oceanic deposit. 本文的主要目的是讨论海洋沉积。
2. The objectives (main points) of the study were to compare and contrast zero tillage with conventional tillage with respect to (in the follwoing, in the following aspects) (1)…; (2)….     本文的目的是在以下方面对免耕种和常规耕作进行比较：(1) ...; (2) ...
3. The motivation for this study came from a recent paper by Smith (1980), in which linear, hydrostatic theory was applied to stratified airflow over a mountain… 本文进行的研究系受Smith (1980) 论文的启发，在该文中作者把流体静力学线性理论用于山地上空的层结气流......
4. We present a theoretical attempt to make an approach to this problem. 我们试图从理论上探讨这个问题。
5. The work presented here is intended to study .... = The present study seeks to investigate .... 本文试图研究....。

* 文章的结构

常用动词：

• 在描写数据和方法一节： provide, present, describe, introduce, give, 等；
• 在研究结果的章节：discuss, show, explore, study, examine, investigate, include, deal with, 等；
• 在结论与讨论一节：provide, present, discuss, offer, summarize, conlcude, 等。

1. The paper is organized as follows: In section 2 we provide a brief review of the data used in the analysis. In section 3 we describe the methodologies used to remove from the global-mean temperature time series the impacts of ENSO and dynamically induced variability. In section 4 we examine the signal of volcanic eruptions in the residual time series from which the effects of ENSO and dynamically induced variability have been removed. Section 5 describes the methodology used to remove the impacts of volcanic eruptions from the global-mean temperature time series, and section 6 discusses key aspects of global-mean temperature variability highlighted by the residual time series. Section 7 provides a summary of the key results.
2. Section 2 describes the model simulations, observed data, and the method used in this study. The mean monsoon and the basic modes of monsoon variability in the models will be compared with those of observations in section 3. The intraseasonal oscillations will be discussed in section 4, while section 5 will present the analysis of seasonally persisting modes. Section 6 will provide summary and discussion.
3. In what follows in section 2, the relevance of ocean bottom pressure as a tool to understand ocean circulation is presented, and background work on GRACE is introduced. Section 3 describes the datasets and section 4 includes validation of satellite and models with in situ observations. Section 5 shows the patterns of variability of the GRACE bottom pressure field, and their associated forcing. A summary and conclusions are presented in section 6.