Task 1 除流程图外：
As can be seen from the picture (table/figure/diagram/ line graph/bar chart/pie chart), it illustrated (shown) explicitly (obviously) X (that X covers the years/months from … to …).
According to / In accordance with the figures / data (dada无复数) given in the picture, X
significantly (greatly/ dramatically/ noticeably) fell from … to … in 19.. to in 19.., whereas. Also / Moreover / Furthermore from the picture it can be seen that there was a sharp decline / increase from…, while…. Based upon / Relying on the figures / data given in the picture, it started / had its starting point at … in 19.., reached the highest point / peaked at … in 19.. and gave its finishing point / finished at … in 19..; on the contrary, …. In addition to / What is more what has previously been referred to , the remaining / rest of all the figures (the other figures) did not indicate/ display/ show a noticeable increase or decrease; on the other hand/ in contrast, …
From not only what was demonstrated in the picture but also what has been mentioned/specified or described earlier in the passage, it can be seen very clearly that there is (seems/appears to be用seem/appear不能用clearly) a tendency which is on the (gradual/ remarkable) increase/ decline (of object)….
As can be seen/ shown from the picture/ flow chart, it illustrates/ shows explicitly/obviously X. There are some conditions/materials given in the picture…. The general process which concerns/ involves several/some cycles will be described/ conveyed as follows.
In the first stage,…
Next is the second stage in which… After that we have the third stage where… Finally in Stage Four…
From not only what was demonstrated/showed in the picture but also what has been mentioned earlier in the passage, it can be seen very clearly that only in this way or by this kind of process can (subject: Oil)… be made or produced.